Your 1821 is a sweet looking bust half. I can't wait to what the 1834 looks like if you are trading up for condition. Echizento points out that there are 21 Overton varieties for the 1834, there are also 12 known contemporary counterfeit varieties for that date as well. 1834 can be an entire collection with just one date with 33 different.
"Suppose you were an idiot, and suppose you were a member of Congress. But I repeat myself."