Parker 51 Ballpoint Pen | Midnight Blue Barrel with Chrome Trim | Medium Point with Black Ink Refill | Gift Box

Product Information

In 2021 a reimagined version of Parker "51" was released. [9] [10] The 2021 model had slight differents with its predecessor, being 4mm longer than the original 51. [11] The Parker 51 is a fountain pen first introduced in 1941. Parker marketed it as “The World’s Most Wanted Pen,” a slogan alluding to restrictions on production of consumer goods for civilian markets in the United States during World War II. First Year 51 Vacumatics produced in 1941 differed in some respects from the 1942-48 production. The most obvious variations were that the barrel imprints were at the filler end rather than next to the clutch ring, and both jewels were metal rather than plastic Above lower: In addition to the full size 51, Parker also produced a demi aerometric version. This was identical to the larger pen, just proportionally smaller in all respects including the cap, and was in production until around 1960

wanted’ – retaining its distinctive streamlined silhouette and iconic hooded nib; yet is made for the future – this pen is hand assembled and made from durable precious resin, benefitting from Parker’s expertise and reputation for superior craftmanship.The Vacumatic filling system was developed by Parker in the early 1930s. Ink is drawn in to the pen by repeated pushing of a plunger at the end of the barrel. This flexes a rubber diaphragm attached to the plunger with the partial vacuum drawing ink into the barrel. Ink is held directly in the barrel - the pen does not have a conventional ink sac Above: The mid 1970s saw the final version of the 51 Aerometric - the Mk3. This had the later 61 cap with metal clip jewel. One important change was that Parker changed the type of plastic used for the shell and barrel to a softer version which is prone to shrinkage and also distortion from the pressure of the metal clutch inside the cap. Threading on the front shell and barrel was also coarser than on the Mk1/Mk2, so parts from these models will not fit the Mk3 The history of the pen is as follows, note that there is inconsistency amongst the experts about the names of the different types of 51, some regard the Vacumatic 51 as a seperate entity and the aerometric is the Mk I, I prefer to follow David Shepherds philosophy as outlined below;

The filling system was re-designed in 1948, with the introduction of the Aerometric filling system. This filling system operated by pressing a pressure bar on "Pli-Glass" PVC sac. [2] This aerometric filling system was used in virtually all 51s until 1978 when production in the UK ceased. Small changes and improvements to the 51 continued almost annually from 1950 on with the major redesigns in the late 1960s with a streamlined Mark 2 followed by the final Mark 3 version in around 1975. A wide range of 51 variations were produced in both the UK and USA with slightly different timelines, and it is not unusual to find different colours, cap styles and imprints in US and UK productionTheParker "51"stayed in production until 1972 with a series of revisions throughout its production cycle. Above: In 1947-48 Parker produced a demi-sized version of the 51 Vacumatic. All parts except for the barrel and cap were identical to the full sized 51. An uncapped Demi is about 11.2cms long whereas the full sized 51 is 12.8cms The Parker 51 Aerometric