Here is a set of 35 year old commemorative medals you might have some interest in. There were each struck for a different organization, and most were in different metals as well. These are proof sterling silver. The scan shows one of the interesting subjects depicted... the golden anniversary of the first liquid-fuel rocket.

Click on this link to see a description of each medal.

http://i.ebayimg.com/00/$(KGrHqZ,!k4E2ERPHGOnBNkpFMh!uw~~_3.JPG

Starting price is based on the value of the metal. You may find one or more that you'd like to add to your collection before you melt the rest of the set.