Hello Marty.
That is a very interesting find.
Based on the distinctive variations in the vein pattern in the maple leaf and the flow of the lettering, I would say a second engraver was definitely involved in the production of these dash jewels for General Motors. The mystery is whether or not these two engravers worked for the same company, BMCo, or were two different companies involved in the production?
Do you know the vehicle history behind your three pins by any chance? if we could assemble enough data from these items surviving on the actual equipment they were installed on, we could build a better image of their production evolution.
One possible line of events could be that BMCo got a small contract from General Motors for a limited run of pins and did not bother stamping them with their ID, so early pins would be unmarked. That contract may have suddenly grown and they added their ID to be consistent with all their other wartime badge and button production, along with other larger contracts by the way. They then found themselves unable to meet the demand for this item and a second manufacturer was brought in to assist.
Thanks for taking the time to post.
David
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