Well normally that is true. But on the 1965-1967 coins there were
no mint marks from all three mints. So you really can't say that cent is from Philadelphia. Each mint created business strike cents even the West point mint. (but no numbers for them) I've heard they were added to Phillys count. But even San Francisco made Business strike cents and Special Mint sets those years. So there is an exception to that rule.

Found it.
Edited by coop
06/11/2018 10:59 pm