I collect a few players, but the largest I have are of Ken Griffey Jr. and Tim Wallach. Griffey I have 868 different cards and about 20-30 that are not in the system. Have 9 mem., 19 ser #., and 2 autos on baseballs, 1 on a photo, and 1 bat. As for Wallach I have 94% of all cards in the Beckett system. Have two 1/1 printing plates and total I'm only missing 21. Have a few other pieces that are not in the system, such as a wall sign and a bobble head.
I collect Ken Griffey Jr., Ichiro, Felix Hernandez, and Leroy Herrmann.