This lot consists of the Chicago Cubs' Ryne Sandberg 1988 OPeeeChee card that has what we refer to as a "Black-Back" where for some reason the back of the card has a dark brown overwash.  This could be work-up or printer's waste.  However you describe it, it is scarce, a word that I use very sparingly, because you see it all the time on ebay lots.   Condition is mint, and is specialist material.  

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