One of the key cards from the difficult and desirable 1969 Topps test issue formally called Mini-Stickers but known to the hobby as 4-on-1's.  Featuring the clean design of 1969's regular issue, the set was limited to 25 cards, with four different peel and stick sticker subjects on each blank backed card. With some slight, barely visible foxing running along the bottom, this is a sharp looking PSA 7 with a clean and bright reverse. Jim Bunning gives this example hall-of-fame gravitas.