I found a 1/2 x 9/16 DOE Samson wrench in a .25 box at a swap meet this weekend. Almost tappet wrench thin, 6 3/8"OAL, 3/16" thick on the ends, and not finely polished. Forged number OE202. The stampings are shallow and uneven, making me think it was made under contract. Reminded me of a Barcalo.