Two of the nicer geocoins I've come across. The first is a "Micro film canister" geocoin. I retrieved it at a cache in Elan Valley, and dropped it into a cache in Pembrey, not far from my home.
The second coin depicts the territorial regions of the Federal Republic of Germany. I found it in Dolerw cache in an unexpectedly green area of Newtown. I let go of it into my own cache, "Geocelc Mynydd Penbre".