Card Identification Forum

https://www.tradingcarddb.com/ViewSet.cfm/sid/99294/1991-Topps-Monster-In-My-Pocket

The cards in the base set have their respective numbers on the back of the card in a black hexagon.  Then there's a parallel version that has no numbers.  The 3 cards that i have (bought as part of a collection), have a different numbering on the bottom of the back.  Just below the green "Monster" all three of my cards have "Collector #43" or whatever number it happens to be.  Any ideas????