John Dettmer Baseball Cards

Generally, John Dettmer Baseball Cards are considered strong investments, especially rookie cards and low-population graded examples.

We take authenticity seriously. With over 40 years of experience in the hobby, every card in our inventory is guaranteed 100% authentic. Whether a card is professionally graded or a "raw" ungraded card, we personally inspect every item to ensure it is genuine before it ever hits our shelves.