1993 DiamondMarks - Orel Hershiser

Another listia win, one that I had to apply some muscle so that a fellow blogger would not win it.  Scorekeepers, this one set me back a whopping 215 credits.

1993 DiamondMarks
Orel Hershiser (card # NNO31)

Here's what The 2009 Standard Catalog of Baseball Cards says about this set:

1993 DiamondMarks 

While they look like baseball cards and were sold in foil packs like baseball cards, DiamondMarks were licensed as book marks. Issued by Barry Colla Productions, the 2-1/2" x 5" cards feature Barry Colla’s trademark high-quality player photos on front and back. The UV-coated fronts feature black borders with the player’s name in white above the photo and a color team logo beneath. Backs, also bordered in black, feature two color player photos in an open book design. There is a portrait photo on the left and a head-and-shoulders reproduction of the front photo at right. A bookmark with team logo is incorporated in the design. The 120-card set is unnumbered and is arranged in the checklist below alphabetically within league and team.

Eyeballing the printed checklist there were from 3 to 7 players per MLB team.