What This Coin Looks Like (Obverse, Reverse, Mint Mark Location, Special Features, etc.): One major variety of the 1878 Morgan Silver Dollar features 7 Over 8 (7/8) Doubled Tail Feathers. The initial die originally had 8 feathers but was later changed to 7. This resulted in what looked like 7 feathers struck on top of 8 feathers - and gave it a doubled feather look. The difference between the 7 Tail Feathers vs 8 Tail Feathers vs 7/8 feathers is depicted below in the example comparison image:
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