My first baseball cards were packs of 1977 Topps. I don't remember the first card, obviously, but I remember there was a Rod Carew in the pack, and I thought he was the greatest player in the game. I immediately fell in love with the card.
My first vintage card was a T206 Rube Waddell portrait. I bought it for a dollar at a store called Dollars and Sense in Ridgewood, NJ. My grandfather had told me about Waddell, and I couldn't wait to show him the card. That began a long tradition of me buying vintage cards of players my grandfather told me about.
I still have the Waddell. I bought it in about 1980. It's my most valuable card.