Card shop · San Mateo, CA
What's On Second Sports Cards
What's On Second Sports Cards is a card shop in San Mateo, California.
- Address
- 221 2nd Ave, San Mateo, CA 94401
- Phone
- (650) 344-8660
- Website
- whatson2nd.com
See this shop in the app
In CardFinder Live, What's On Second Sports Cards is on the map with directions and a call button. Find cards from collectors near you, save what you're chasing, and message the seller to line up the deal.
More: All card shops in California · Card shows in California · Card shops in other states
Shop details from CardFinder Live, updated November 8, 2026. Info can change — check with the shop before you drive.