Originally Posted by EW1066
Would I be correct in assuming that no one here knows either? Well, I guess I don't feel so bad. It's still gonna bug me though.
I'm still open to an answer if anyone has one.
With no first hand knowledge my guess would be that it is a registration mark to establish a zero point for all future measurements during the machining process similar to those found on multi-color print work.
"The whole of the Bill (of Rights) is a declaration of the right of the people at large or considered as individuals.... It establishes some rights of the individual as unalienable and which consequently, no majority has a right to deprive them of." (Albert Gallatin of the New York Historical Society, October 7, 1789)
"A free people ought not only to be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government." - George Washington