Most undervalued--low pop commons in psa 8 or psa 9 from most popular vintage sets,T205,T206,33 Goudey,34 Goudey,34-36 Diamond Stars, 33 Goudey Sport Kings, 48 Bowman, 51 Bowman, 52 Topps, 53 Bowman Color, 55 Topps.Dav