I just got a couple of these in change today and noticed a few very odd things about it:
1. It is the first and only quarter that has 25¢ on it. Three quarters have 25C. on them, one has no denomination and the rest have “QUARTER DOLLAR” or similar on them.
2. It has incused lettering on it. As far as I know the only other coins with incused lettering on them are the 2-1/2 and 5 dollar gold Indian Head coins and the F on Buffalo Nickels.
3. The dies aren't going to last very long. Both of the coins I got today are AU and already some of the incused letters are showing die break damage.

Different coins:







