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Hence a "47" marking on a 1930's pen indicate that the pen was produced in the fourth quarter of 1937, not 1947, which is a common misconception. 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. Generally used for figure work 14k 63 Extra Fine-For fine line writing with a light touch 14k 64 Steno-A fine point adapted for use in shorthand and speedwriting 14k 65 Fine-Excellent for general writing and note taking. You may however use the information as reference material and although it is forbidden to make digital copies or reproductions it may be physically printed for personal use, which does not include use on other web pages or in advertising. I U (there are discrepancies between models) 62 Accountant-Produces very thin lines with a delicate touch. Everything on this website is copyrighted by law and can not be used without written permission from the author, Tony Fischier. Flat, broad edged points generally put to paper at a 45 degree angle 14k Also X Extra Fine F Fine M Medium B Broad FI Fine Calligraphic MI Medium Calligraphic BI Broad Calligraphic 24K or 1000 (parts of 1000) 22K or 916 18K or 750 lowest allowed gold content in France until 1994 15K or 625 discontinued in 1935 14K or 585 12K or 500 10K or 416 Lowest allowed gold content in USA 9K or 375 Lowest allowed gold content in Canada and UK 8K or 333 Lowest allowed gold content in Germany A solid layer of gold, mechanically bonded to brass, or sometimes other materials, with heat and pressure. Gold plating is usually a thinner layer than the above. In 1986 Parker patented a process, developed together with Jamers Snyder of the University of Wisconsin, for depositing microlayers of gold and titanium nitride to create the glow of gold but the durability of chromium.
Electroplating chemically adds a very thin layer of gold to the base material. The process involves physical vapor deposition of gold (PVD). According to Parker a microlaminated surface of 1.3 micrometer has a "service life" equivalent or exceeding that of a 10 micrometer gold plating.
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. Also, since this coding system extended over a decade, a pen marked 38 could be produced the third quarter either in 1938 or 1948.
In 1950 a new system for the date coding was introduced where the two digits only indicated the year, not the quarter hence "50" means made in 1950, this system was used in the US until 1955 and in Canada a few years longer..
It has been assumed that Parker began marking some of their pens on the trim or cap bands to allow for dating in 1970.