Pics now in hand officially count as pickups.
I know it isn't pre war, but it is still pretty cool. Did some research on the pic. Dated 5/67 against Cubs at Shea. Mets played Cubs at Shea on 4/20/67. No games at Shea against Cubs in May. Seaver's first start was 4/13 against Pirates at Shea. So this pic dates from Seaver's second ever ML start on 4/20.