I saw someone mentioned this in another thread and in my opinion it is the Draped bust quarter/half dollar/dollar. I love the small and large eagle reverses.
Previous 3 replies are all great. If I had to choose one from a design aspect, I would go with Walking Liberty Half Dollar, as previously posted by @Michael K To differ, I will nominate Seated Liberty (without stars)...
I have to go with the seated series ,as well as the buffalo nickel. Both are iconic American culture . Not to knock commemoratives but they really aren't in the same class as most series are. They were minted to mark a event in history. They weren't really intended to be used as money even though they had a cash value. Yes a lot of them are iconic American but again not main stream currency . However I would venture to say that any coin or note for that matter, that was issued before the modern age of the mid fifties most retailers would question as to being real or have a cash value.
I am a seated liberty fan here. I have always liked the design and despite selling off many u.s. coins from my type set over the years, a few seated I have sold was hard. Second favorite would be Draped. I admit, I am glad I didn't grow up to the seated liberty in the 1800s. I think I would have been sick of the design like I am the Lincoln cent & our other moderns.
2009 High relief St. Gaudens. Was originally planned to have wings, and headdress but was not feasible at the time. Here is what they were intended to look like, as the story goes anyway. (Silver version, also available in gold) Completely different reverse. More like a Peace dollar. The Pan-Pacific is right up there, as well as Indians, and well almost every single one that I can think/dream of.
but this is one I loved from the first time I saw it,yes a contradiction of a post before, but this to me is one beautiful coin.
My vote goes to the Mercury Dime. The Walking Liberty Half dollar is a close second. Both were designed by Adolf A. Weinman. The mint should have just let him redesign all the denominations that year
If we limit it to coins intended for circulation, the HR Saint is my pick. Thank goodness the headdress and wings were left off. If proofs, patterns, commems and bull coins are included, then it's the 1907 ultra-HR Saint. Cal