There's a collector in New Zealand who is interested in collecting space coins and medallions. There are assorted other links on his website to his collection of flown (material) medallions and meteorite coins. While these are not the sort of items I collect, the site shows a bunch of different items, so it is a worthwhile resource if you are interested in finding out about a space related coin or medallion you might have seen someplace. http://www.spacecollection.info/medal_sets/coin_sets.html
cool. I have a German made 1 oz round that has the Apollo landing on it. and about 5 other tokens/medals about the various Apollo/Saturn spacecraft.