I like the SBAs as well but Sacagawea better. Sack a what?
I've been hanging on to bi-centennial quarters [and half dollars] when I find them.
Also coins from 2001.
And for a lark I keep any Cumberland Gap National Historical Park quarters I find. Thought it might be neat to hand out to those in the area one day.
I recently got several WWII Nazi coins and several Civil War era coins. The 3 cent nickel fascinates me for some reason.