I love the '70 Topps signed! Awesome success! Congrats!
Davidson also played a baseball player on probably the worst, or one of the worst, summer replacement sitcoms of all time. I don't remember the name of the series, but it came out in the mid '70's, and starred Jim Bouton as a knuckleball pitcher trying to hang on in the big leagues.
I loved this commercial and the ad campaign! Davidson, by the way, was much better in these than he was in that television series. By the way, the television series was also called "Ball Four." Now that was bad, truly bad, television. It was, however, MUCH better than the sequel to "Ozzie & Harriet," called "Ozzie's Girls." That one was so bad my dad, one of the calmest and coolest individuals you would ever meet threatened to throw a soft drink can through the picture tube if we didn't change the station to something...anything other than that!