For a while I've been collecting US coins with modern renditions of classic designs, really just a 21st century phenomenon, but fun. This is my favorite, the 2009 Ultra High Relief Saint-Gaudens double eagle. This is very similar to the original which was a pattern in 1907, but rather than the normal $20 planchet, it was reduced and struck on 2 $10 planchets stacked on top of each other. The modern rendition has the same diameter to bring up the ultra high relief as Saint-Gaudens indended.