Shortly into the Morgan dollar's first year of 1878, it was discovered that the Mint's original rendering of the Eagle was incorrect because Eagles do not have 8 tail feathers-they only have 7. Some coins already struck with 8 feathers were re-struck with a 7 tail feather die. But tips of previously struck 8 feathers are still visible. These '7 Over 8' tail feather 1878 silver dollars are a prominent and hard to find today and are highly coveted by collectors. This key first-year-of-issue design is the first Morgan Silver Dollar minted with an anatomically correct eagle and is a must for those who want to add an unusual, and scarce, Morgan Silver Dollar to their collection.