I made an album to show what coins circulated during the years. At each change in design, I made a new row. I am still working on after 1975 because there are sooooo many changes. If you guys have any ideas, let me know. I might try to take better picture if anyone wants me to.
Interesting concept, I love it. I notice that you've excluded overlap but I'm not sure how you'd handle the extra hole. 1916 for example had both Barber and Mercury dimes. I suppose you could just add a caveat to the 1913-1915 label by adding something like "(1916 dimes)".
