kev2xx----- I honestly think you should keep and enjoy your Roberto Clemente card run. You worked fairly hard to build it. As your son watches you admire your Clemente cards, he just might get curious.......
As others have stated, right now he is interested in Say Hey, Hammerin' Hank, and Mr. Robinson. All great choices. Speaking from experience, having collected off and on since 1961, I've collected and concentrated on numerous players, sometimes for a couple years, sometimes for several decades. If he's interested in baseball history, he'll probably vacillate or choose some others over the course of his collecting life. It's all good, usually.
You love collecting Clemente. Man, don't sell that away.
You are fortunate to have a son who likes collecting vintage baseball cards, just as his dad.
--- Brian Powell