The cards in this 752-card set measure 2 1/2" by 3 1/2". The 1971 O-Pee-Chee set is a challenge to complete in "Mint" condition because the black borders are easily scratched and damaged. The O-Pee-Chee cards seem to have been cut (into individual cards) not as sharply as the Topps cards; the borders frequently appear slightly frayed. The players are also pictured in black and white on the back of the card. The next-to-last series (524-643) and the last series (644-752) are somewhat scarce. The O-Pee-Chee cards can be distinguished from Topps cards by the "Printed in Canada" on the bottom of the reverse. The reverse color is yellow instead of the green found on the backs of the 1971 Topps cards. The card backs are written in both French and English, except for cards 524-752 which were printed in English only. There are several cards which are different from the corresponding Topps card with a different pose or different team noted in bold type, i.e. "Recently Traded to ..." These changed cards are numbers 31, 32, 73, 144, 151, 161, 172, 182, 191, 202, 207, 248, 289 and 578. These cards were issued in eight-card dime packs which came 36 packs to a box. Remember, the prices below apply only to the 1971 O-Pee-Chee cards -- NOT Topps cards which are much more plentiful. Notable Rookie Cards include Dusty Baker and Don Baylor (Sharing the same card), Bert Blyleven, Dave Concepcion and Steve Garvey. Read Less »