Wow, I completely forgot about this old thread I started, what -- seven years ago?
Nice additions, MachinMachinMan, Dearborn and HondoB!
Here are a couple more I have picked up since I last posted here:

[1892 was the first year of issue for the Liberty Head half dollar, nicknamed the "Barber" half dollar after the designer of the coin,
Charles E. Barber. This particular example is a proof coin,meaning it was specially struck for collectors using a special die and blank to give it a mirror finish.]

[The so-called "3 Legged" 1937
Buffalo nickel is not actually a true variety, since the missing fourth leg feature was actually present in the die when new, and is really just a case of a late die state (LDS) striking where the die had become worn. The technical term that has been adopted by variety specialists is Abraded Die Reverse (ADR). Despite the fact that it is not a true variety, however, the 3-legged
Buffalo nickel is beloved by collectors and is considered the most famous key date in the
Buffalo nickel series.]
And here's a slight upgrade to my original MS63 1921
Peace dollar that I picked up at the coin show this past July (and that I wholly paid for by trading in some junk silver I had
inherited from my dad back in 2015):
