Percussion cap stamps/markings


An archeologist has contacted the National Muzzle Loading Rifle Association for help in identifying stamps/markings on excavated four-wing percussion caps from the site of a historic fur trading post. This information could help determine provenance and age of the caps (both fired and unfired) discovered at the site. If anyone can help with this type of information, please contact me ( Many thanks for help and/or leads.
Eric Bye, Muzzle Blasts Editor


I have provided private reference via email.
Chris P.


Would you please share the reference. I can vaguely recall seeing something on percussion cap marks, perhaps in a recentissue of the IAA journal, or the Gun Report.