Hi Glenda, coin jewelry has been popular since coinage began! I think that using wire to make the frame is a smart choice, because the actual coin is not damaged by drilling a hole in it or cutting parts of the coin out.
Here are my solutions to this challenge. You could use a simple Frame Design, similar to making a pendant frame for a cabochon, and you could actually attach a number of these wrapped coins to a linked chain (great bracelet idea). On the linked DVD, although the sample piece is an irregular cabochon, you will be able to make almost anything into a pendant, because all of my formulas for sizing are included!