In 1933, the Goudeys Gum Company released a 240 card set released called the Goudeys baseball card. This card set is the first one of its kind to be issued with bubble gum in the pack of cards. Before this set came out, the cards were released in tobacco packs.
The cards also double as advertising for Big League Chewing Gum, which can be seen on both the front and back of the card. They are also very distinguishable because each card features a drawing of each player.
The first card that I bought that was from this set features Ben Cantwell. Ben was a pitcher for several teams starting in 1927. By the time 1933 rolled around, he was a relief pitcher for the Boston Braves. This year was a pretty good year for Ben; he came close to winning the MVP award for the year.
The great thing about this card is that it falls into several collectible categories: advertising, baseball lovers, and gum nuts could find room in their collection for it.
I have this card listed in my Etsy store, and you can see it here.