Old Letterpress Numbers

Our printery is shutting down and they were throwing out all this great stuff, I managed to rescue these great vintage letterpress numbering wheels. Some of them are so intricate and beautiful. There are even some that have a little brass 'O' that moves in and out. I couldn't let them head to the tip so I saved them. I'm thinking they might be great for some jewelery after a little cleanup and smoothing of any rough edges.