Vintage Washington Redskins Tshirt

100% cotton, Short Sleeve t-shirt Maroon/Dark Red 24” armpit to armpit 31” shoulder to hem Please note measurements - tag says Large but seems to run big. Please see photo for the mark/stain on front. Two little white dots above the A/S and discoloration on middle collar. Not sure what caused it since it has been in storage and has never been washed.