The first coin has some characters and flowers along with "100" The second coin has characters and a hole through the middle. I'm not quite sure how else to describe it. Pictures are attached. I apologize for the quality. Any ideas what these are? (and maybe what they're worth?)
Top - 100 Yen, cu-ni, 1967-2012 - value: face (~87 cents) Bottom - 50 yen, cu-ni, 1959-2012 - value: face (~43.5 cents)