I've always liked cards of teams that don't exist anymore. And the Senators are perhaps at the top of that list (or maybe 1a and 1b with the Expos now).
Bob Oldis played in the majors over parts of 10 seasons, but never appeared in more than 47 games. He played for the Pirates in '60 and '61. When digging through vintage boxes at shows, I always keep my eyes open for vintage cards of players who I know are reliable signers. And though this '54 card is fairly well worn, for a mere $1, it was a no-brainer to add it to my pile and get it out in the mail a few days later.