Topps Cello Packs question
My first Topps Cello pack were 1973. The front had printing on it-Topps Baseball, the 25 cent proce, and the stick of bubble gum. I see that early Cello had nothing on the front, I wounder why? No company ad, no price. Anyone know why? And when did Topps then change to things printed on the package.
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