The mintmarks were hand punched into the master dies back then. When you see the same "doubling" in date and MM, you can be pretty sure that you...
ENTRY POST C- US COINS Many thanks @lordmarcovan for another chance for people to enhance their collections. Here is a Sterling Silver proof [ATTACH]
[ATTACH] [ATTACH]
[ATTACH] [ATTACH] [ATTACH] [ATTACH]
Separate names with a comma.