Upper left is a Potosi 8R, 1620s.
Lower left is a Potosi 8R, mid-late 1640s.
Upper right is Mexico, Philip II-Philip III (ca. 1580s-1617). Don, that's assayer F... Hapsburg shield. Assayer J 1715 Fleet-type pieces are BOURBON shield........
Very nice, similar patina on all three - I especially like the 1640s Potosi. What country are you out of? I would assume these to be a small old hoard of some sort.