PM6 is a mysterious 8 subject pin set from 1928, issuer unknown. Small at 3/8 inch diameter, the player selection included 7 Hall of Famers, one of which was George Sister. Graded PSA VG 3, the image is slightly off-center to the left, the quality remains strong and clear. Some wear and oxidation is visible on the reverse. One of just two examples graded by PSA.