But to reach a 93% visual accuracy compared to traditional gold plating, Parker uses a 3 micrometer layer of which 0.4 micrometer is 14K gold. And since the gold part of the microlayer can be as thin as about 0.003–0.3 micrometer, the amount of gold used in the process is incredibly low.
In 2000 the code again underwent a small change when the quarter switched sides with the year and there was a dot between them "Q.
Flaws should always be noted, such as scratches, cracks, dents, etc.
The following codes should be used to establish an overall condition, rather than be taken literally.
It has been assumed that Parker began marking some of their pens on the trim or cap bands to allow for dating in 1970.
Using the words "Quality pen", one letter per year, followed by a quarter marker, allowing for dating within a ten year span.