In the April 1977 issue of "Automag" one Charlie Sorrentino proposed a study of these workers' stamps, and solicited NAPCA members for examples from their own collections. I have not run into any published results, but at least there is a name to start with.quote:Originally posted by Jan C Still
Figure 12 Forward frame well of 1908 Commercial Army Luger, serial number 70149. The various letters and digits stamped in the frame well are an interesting area for study. Is progress being made? Any comments?