Fountain Pens – Parker 45 Vs. Parker 51

If you’re in the market for a new fountain pen, you’re probably wondering which is better – the Parker 45 or the 51. This article compares the features and benefits of each pen. Which one is better? Read on to find out! These pens have unique designs from the 1960s and write exceptionally well, made to be the everyday writing tool. Can they still hold up?

Parker 45

If you’re a fountain pen user, you probably want to know the difference between the Parker 45 and the more famous Parker 51. While both fountain pens are excellent choices, there are a few differences between the two. First of all, the “51” no longer has the Blue Diamond guarantee, meaning you can no longer get one for free if you don’t like it. Also, the 51 was redesigned to look like a Vacumatic arrow clip. You can also get them in a single or double jewel, in either case, with the same color options.

The Parker 51 was updated in 2002. Unlike the earlier model, it lacks a sophisticated ink collector, and the 51 uses cartridges instead of refillable refills. The Parker 45, by contrast, features a small conventional nib and is more like the older, double-jewel versions. Even though both of these fountain pens have different design elements, they are very mechanically similar. And as far as quality and design are concerned, the 51 is slightly more expensive than the 45.

two "Parker 45" fountain pens
Two Parker 45 fountain pens

If you’re a pen lover, you may wonder which is better. The “51” is a fountain pen made by Parker, while the 45 is a school pen designed for beginners. This fountain pen is made from gold-plated steel and uses cartridges, while the “45” uses a converter. This pen is also the oldest of the Parker line, as it was manufactured for decades. You can find a Parker 45 in every color and finish, including gold.

The filling mechanism of the Parker 51 was changed from a rubber diaphragm to a PVC pli-glass reservoir in 1949. Unlike the Vacumatic, the 51’s Aerometric filler is resistant to ink corrosiveness and doesn’t crumble like standard rubber ink sacs. Parker emphasized durability and convenience in the “51” by improving the filler system.

Parker 51

The Parker 45 is similar to the modern-day Parker 51, which also uses cartridges and converters, but lacks the sophisticated ink collector and has a small conventional nib. The two pens have some differences, but the 51 is more similar mechanically. The Parker 45 has a finned collector, whereas the 51 has a cylindrical feed. It also has a unique connector ring, which some collectors mistake for a broken aerometric filler.

The Parker 51 is arguably the most important of all Parker pens. It was introduced in 1941 and quickly replaced the Vacumatic as the company’s top-end model. This model was first advertised as “The World’s Most Wanted Pen,” and its advertisements positioned it as such. As a result, it became an icon of American design and even a part of the Museum of Modern Art’s permanent collection. The 51’s design was so beloved that the company marketed it heavily during World War II, and the production of the pen could not meet the demand.

Blue Parker 51 with open cap

After the first version of the 51, Parker redesigned it in 1947 with a new filling mechanism. The Aerometric system replaced the Vacumatic filler. The Aerometric filler was a nylon bladder with a metal frame and squeeze bar. The bladder was designed to last 30 years but is prone to clogging. However, unlike the original, the new Parker 51 filler is more durable, lasting almost 50 years.

The “51” is often referred to as the “First-Year” model. The pen was produced from the late 1940 through the 1950s and is easily distinguishable from later production by several features. The nib is almost double-jeweled, with a decorative “jewel” on the end of the cap. It is made in the United States, so it will never be confused with other models. This is the perfect pen for beginners!

Eversharp Challenger

One of the most important things to know when buying a fountain pen is the differences between the two models. These models have different features and benefits. If you are considering purchasing a fountain pen for the first time, this guide will help you choose the best model. You can also find reviews of both models and compare their features. Listed below are some of the differences between these models. Read on to learn more!

Parker 45 was first introduced in the 1960s to meet the needs of a market segment not addressed by Parker 51. Like the Parker 51, it was also a cartridge pen. Eversharp had its development project, which eventually became the Parker 45. The company acquired Eversharp in the late 1950s and released a lower-cost version of the Parker 45, known as the Eversharp Challenger. Both models are interchangeable, but their cap styles are pretty different.

Eversharp challenges the Parker 51 in the Parker vs. Eversharp Challenger Parker 45 vs. Parker 51: Which is better? Parker 51 is the better choice. Both models are excellent writers, and one must be careful. It might not be easy to distinguish between the two. However, you will find that Parker 51 is the better option if you want a fountain pen for everyday use.

In terms of price, the Parker “45” costs more than twice as much as the Eversharp Challenger. The Eversharp Challenger is the cheaper Parker-made sister pen. Its body and nib are identical to the Parker “45” except for the clip. This model lacks an arrow clip and has a plain, ridged clip – similar to the Parker “21” pen. The Eversharp “E” was on the cap but did not have the metal body ring. A black ring close to the nib was present.

Parker 17

The difference between a Parker 17 and a 35 is striking when considering a fountain pen. The latter is a cheaper, less-premium version of the Parker 51. Made of mostly plastic, it lacks a metal clutch ring. The 17 was marketed as a low-cost fountain pen when it was first introduced. The early models had an open nib but later changed to a hooded pen with a sturdier cap.

The Parker 45 has a partially-hooded nib that doesn’t cover the entire tip. Compared to the Parker 17, the 45’s nib protrudes enough that it’s easy to see how the pen is oriented, making it much easier to read. The Parker 45 has a slightly broader, more rounded nib but is still an excellent choice for beginners. Both models are surprisingly similar, but they’re distinctly different.

The Parker 45 is one of the oldest fountain pens from Parker, dating back to 1898. While it used cartridges, this pen also featured an aerometric converter. This pen is sold today, so Parker hasn’t lost popularity. Its many parts are interchangeable, but the Parker 45 nib is gold-plated steel. The only significant difference between the two is the style. You might want to check the price and choose the most affordable pen.

The Parker 17 and the pen’s EF nib should generate 0.150g of ink per hour. Both sample pens passed the requirement, while the other fell short at 0.13g/h. Consequently, both pens produced weak lines of writing. A fountain pen with an EF nib should be able to function at up to 3500 feet of altitude. The first and second testing runs of the two pens were performed at 2400 and 3800 feet, respectively.

MKIII Parker “51”

The MKIII Parker “51” was introduced in 1969 and has long been considered a top-notch writer. Its distinctive, finned cap is still present, but a sleeker, more ergonomic feed replaces it. In addition, the pen’s end stud is now an integral metal stud. This unique feature and collectors often mistake it for a broken aerometric filler.

The MKIII Parker was a complete redesign of the original. It featured a metal casing that encased the pliglass sac and a curved metal bar. The filler had a red band that ran from the barrel end to the filler, encased by red threads. The band was made of plastic in the early years but later was fashioned from aluminum. The “51” filler had a standard button filler, but Parker modified it with a special composite sac.

If you want to purchase an MKIII Parker “51”, you’ll want to choose a pen with an ACCountant nib. The nib of this pen has a non-converging five-line pattern and is above the XFINE or NP marks on the Parker factory’s nib gauge. You can also find a great selection of Parker 51 fountain pens from Pentooling.

A standard fountain pen has gold-filled trim and a cap made of Lustraloy. The nib is medium to fine. The MKIII Parker “51” features a metal thread insert. Its engraved gold clip is distinctive, and a gold-filled clip reflects the pen’s craftsmanship. It comes with a box made of lush velvet. This may be the ideal choice if you’re looking for a unique gift for a fountain pen lover.

Parker 51 has a hooded nib

In terms of writing experience, the Parker 51 has a hooded nib, but it is not the only difference. It has interchangeable caps, making it easy to switch inks if you don’t know much about fountain pens. Unlike the 45, which has threads around the grip section, the 51 is well-balanced. Unlike the 45, it does not require threads to open the pen cap.

The Parker 51 is one of the most iconic pens produced by Parker. It was introduced to the market in 1941 and quickly became one of the company’s bestsellers during World War Two. While the original design remained the same, later, Parker introduced the Aero-metric filler system, which was more convenient to use than the Vacumatic. However, this system held less ink than the vacumatic 51s.

Although the Parker 51 has a hooded nib, the Parker 45 features a rounded tip, and this design is considered more premium. 

The Parker 51’s cap band is more traditional, with a frosted “Lustraloy” finish and a thin, shiny band. This cap band is usually gold-filled but can pick up scratches easily. The 45’s design is reminiscent of the 1960s, and its price is lower, but it does not have the same hooded nib.

Parker 51 has a metal ring that mimics the original clutch ring

The frosted “Lustraloy” cap of the Parker 51 has a shiny, gilded ring that mimics the old clutch lining of the Parker 45. This version of the Parker 51’s cap is more durable than the earlier satin-finished models. It is available in a variety of colors. I have two vintage Parker P51s, and they look great!

The Parker 51 features a polished rim band and a metal ring that replicates the clutch lining of the original. The Parker 51 is 13.9 cm long with a chrome-plated ring and is an excellent example of this model. Despite the small size, this pen still offers a solid feel and is easy to handle, and its gold-plated metal ring is easily identifiable.

The Parker 51 is similar to the Parker 45 but features a built-in filler. This pen can use converters or cartridges, and it also has a metal ring that mimics the clutch ring of the Parker 45. As a result, the Parker 51 is an excellent choice for collectors. Although the Parker 51 has a modern-looking ring, the rounded metal nib on the original 45 is not interchangeable.

While it may seem hard to identify the exact year of production of the Parker 51, you can still find examples that feature the date code “1” imprinted on the cap. Some examples feature a rounded blind cap, but some have no date code. These examples may be pre-production models dating back to the 1940s. In any case, a Parker 51 is a highly collectible fountain pen.

Parker 51 has a plastic “jewel” on the cap

The earliest incarnation of the ballpoint pen has a plastic “jewel” on its cap. The modern ballpoint features gold filling on the cap, barrel, and clip. This pen has a medium nib and is available in several colors. Its cap is adorned with nine grouped vertical lines. In addition, the Parker 51 has a gold-filled cap.

The new 51 series includes two more colors. These colors were advertised as Rage Red and Vista Blue and illustrated as such. They are burgundy, navy blue, and blue-gray, the same as the older “51” style. Several colors are available for the new series, and some are even numbered. However, those in the United States will likely have some color-coded jewel on their caps.

The PARKER 51 AEROMETRIC FOUNTAIN PEN has a gold-filled cap and trim. The nib is medium-fine and is part of the company’s range. A gold-filled cap, medium nib, and chrome-plated clip make this pen an excellent choice for writing on a computer. This fountain pen is made in England and has a gold-filled cap.

In addition to the Parker 51’s plastic jewel on the cap, the Parker 45 and a plastic “jewel” on the tip of the Parker 45 make it stand out from the competition. These two pen types have different uses, but both have a long history of design innovation. One of the most recognizable pens in the world is the Parker 51, which was introduced to the world in 1941. This pen is also one of the longest-continuing designs, produced until 1972.

The Parker “51” Mark II fountain pen is one of the best-performing pens ever produced. It never leaks, works, or breaks. It also had a hooded nib, which helped prevent the ink from drying to the paper. Its color has a distinct eye appeal and can be easily recognized on any surface. The Parker 51 is a beautiful pen to add to your collection.

Parker 51 Fountain Pen | Deluxe Black Barrel with Gold Trim | Fine 18k Gold Nib with Black Ink Cartridge | Gift BoxOpens in a new tab.

Parker 51 has a better clip

The Parker 51 is the successor to the famous 45 and is a good choice for those looking for a fountain pen with a high-quality clip. The 51 has a steel nib and an excellent clip, which varies slightly in appearance depending on the model. As with other Parker fountain pens, the 51 has endless variations. Whether you prefer the classic style or the modern look, the 51 will be a perfect choice.

The Parker 51 is a much bigger pen than the 45, and the nib is 14K gold, while the 21 is made of stainless steel. The latter is cheaper, with a polystyrene barrel instead of the more expensive lucite barrel. Although both pens use plastic barrels, the 51 is made of lucite, while the 21 is made from polystyrene, which is more likely to crack. In addition, both pens have a slip-on cap with no screwing or snap action.

The Parker 51 has a better clip than the earlier model because the barrel was a little longer. That length resulted in a difference in the cap-to-body ratio, creating the illusion of a more oversized pen. Its thin cap band also helps it hold ink better. If you are looking for a fountain pen, the Parker 51 is a great choice. You can even buy a frosted Parker 51. The Parker 45 also has a better clip than the 51.

If you’re a pen collector, it’s worth paying a little more for a 51. It’s better than the 45 for many reasons. A better clip means a more comfortable pen grip. An improved clip makes writing more convenient, and a redesigned aerometric filler is easier to fill. The Parker 51 has an aerometric filler. If you’re looking for a high-quality fountain pen, you should consider purchasing a 51.

Parker 51 Fountain Pen | Deluxe Black Barrel with Gold Trim | Fine 18k Gold Nib with Black Ink Cartridge | Gift BoxOpens in a new tab.

Parker 51 is shorter

The Parker 51 was a top-of-the-line model until the late 1970s when Parker introduced several lower-priced models based on the same basic design. These newer models were intended to cater to customers who could not afford the high-end Parker 51. The resulting models were not particularly popular and looked like cheap knock-offs of the classic plastic barrel models. However, they were not too wildly expensive and were still available to pen lovers.

In 1948, the Parker 51 underwent a redesign with an Aerometric filler. This system consisted of a transparent nylon bladder and a metal frame with a squeeze bar. The original design of the Parker 51 aimed to make it last at least 30 years, but the new filler was more durable. The new system had an Aerometric filler, which does not have an O-ring and is more effective at preventing the ink from splashing out.

The Parker 51 is significantly shorter than the Parker 45 and features a similar steel nib. The pen’s short length makes it a more portable choice, and the aero-metric filling system makes refilling easy and convenient. The 51 is also cheaper than its predecessor, the 45, which features the same basic design as the 45. The 45 is also better if you buy a fountain pen for writing in school or at work.

In addition to the shortness of the Parker 51, it features a frosted “Lustraloy” cap. While this cap tends to pick up scratches, the Parker 51 features a thin shiny band. The cap also features the logo of the Empire State Building. In addition, the Parker 51 has a gold-plated clip that fits perfectly into the hand. Its chrome band has a unique color and is the ideal pen for writing in school.


My name is Jaap, and I am a passionate collector of pens and stationery. I am excited to share my knowledge and love of this hobby with you through my website. From fountain pens to notebooks, I strive to provide in-depth reviews and information on all things stationery. Whether you're a student looking for the perfect notebook, or an artist searching for the ideal sketchpad, I am here to guide you through the process of finding the perfect items to suit your needs. Join me on my journey of exploring and documenting all things pen and stationery.

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