The 1955 Topps baseball set - just the fourth year it issued cards - didn't have as many (206), but what it lacks in quantity, it makes up for with the first of its two classic horizontal designs. This 1955 Topps low number collection includes these keys: #2 Williams EX, 28 Banks EX, 47 Aaron EX-MT, 50 Robinson EX-MT, 100 Irvin VG, 123 Koufax (4) EX, VG, VG, PR. . There are 76 duplicates (some are three or four of the same) and they grade VG-EX overall.