I was doing some research on another article concerning Nascar Pro Set racing cards and an old thought came back about "Borderless" sports trading cards. Of course "Mothers Cookies" produced the first all borderless cards as inserts into their cookie bags but they were just as stated, "Inserts" and not full trading card production runs. If I remember correctly Pro Set was the first to release borderless trading cards in 1991 followed by Topps "Stadium Club".
