Model identification guide
iterary hundreds of different Vacumatic models exist. This Model Identification guide is in no way a complete recapitulation of all these models. Instead it is an effort to help collectors and/or Vac-owners to identify and perhaps date their pens.
Dating is rather simple, since most Vacs have a date code engraved on the body. You'll find it to the right of the imprint:
The first date codes emerged in the third quarter of 1934, but lacking a date code doesn't necessarily mean that the pen was made pre-1935, since many imprints have been worn off. The first date codes came in two digits, where the first digit denoted the quarter and the second the year. Hence a pen with the date code 15 was made in the first quarter of 1935 and 47 was manufactured the fourth quarter of 1937.
In the second quarter of 1938 this system was however changed to save production time and a new date code, using a system of dots was adopted. The stamp initially had three dots and for each quarter one dot was filed down leaving none for the fourth quarter. Since production was overlapping examples exist with either the imprint 28 or .8. for the the second quarter of 1938.
ince production continued over a decade a pen with the date code 8 can be produced in either 1938 or 1948. The models did however differ and this guide will help You differentiate between them. And even if Your pen has lost it's imprint this guide will help You to narrow it down a bit.
here are essentially three filling mechanisms of the Parker Vacumatics, the lockdown, the speedline and the plastic. There are some transitional models, with metal speedline fillers in the rounded plastic blind caps. But for all general purposes the models are the same.