Not sure I can come up with only one. And without digging them all out I can't remember them all. But two that stuck in my mind are Teaxs and Connecticut.
A tad bit off topic, but which state has the lowest mintage? Oklahoma? I don't collect the quarters, but want to pull out ones from change that may, loooooong term, be of some value.
I like both the Dakotas. North with the bison and South with Rushmore. (Subconsciously I'm sure I'm bias because I was born and raised in North Dakota).
Mine would be the 2004 D Wisconsin State Quarter with an extra leaf. Second favorite would be any state quarter with a Die Axis Rotation error.
yeah the canyon is a really really beautiful place. but my fav quarter is the Wisconsin extra leaves too bad i dont have any