My typical user name here is @PocketArt- been so long that I've been here I forgot I had two accounts when I posted last night. Use one for submissions to NGC, and other for chat boards- guess I exposed my alt, hehe. I tried to find if you could delete but couldn't locate that function.
Anyway, yes Jason I agree with you- probably just star. The reverse just isn't quite there, as much as I'd hope it would be; but still nice.
@numisport, actually there isn't any die polish marks as would be typical for most PL Washington quarters from say like the '40's. The various marks on obverse would be wear/chatter. I'm almost convinced that an obverse proof die may have been thrown into production for business strikes. Maybe not to far fetched as over a half billion were produced at the Philadelphia mint. Hard to determine with obverse- not like the reverse type "B" that has attributes associated with proof. Yet, you could be right as I don't know what methods had changed to polish dies, and if far less abrasive? IDK.