What This Coin Looks Like (Obverse, Reverse, Mint Mark Location, Special Features, etc.): One major variety is the 1880/79 Morgan Silver Dollar with an 80/79 overdate from the Philadelphia Mint (sometimes known as VAM-23). This coin features an 1880 date struck over the previous year of 1879 date - which resulted in an 80 over 79 date. This variety can be very difficult to identify because the "79" doesn't appear within or around the "80". Instead it appears on the numbers itself. Parts of the top of the "7" can be seen on the upper-left portion of the "8" and the vertical bar from the "7" can be seen on the right side of the "8". Part of the "9" can be seen in the middle and bottom portions of the "0" as depicted below in the closeup example image. The difference between the 1880 normal date vs 1880/79 (80 over 79) Morgan dollar varieties is depicted below in the example comparison image:
Coin Value Chart: Typical Coin Prices, Values and Worth in USD based on Grade/Condition