The Common Theory Card Show lands on Convoy Street on Sunday, September 20, 2026, bringing SD Card Club's community-first card show to one of San Diego's best-known craft beer and gastropub destinations. Set inside Common Theory Public House in the heart of the Convoy District, this afternoon show pairs a vendor floor with great food and an easygoing atmosphere that makes it an easy sell for collectors who want to make a day of it.
The vendor mix reflects San Diego's blended hobby scene. Trading card games are well represented, with Pokemon singles, graded slabs, and sealed product leading the way, supported by One Piece Card Game, Magic: The Gathering, Disney Lorcana, and Yu-Gi-Oh! tables. Sports card vendors bring MLB, NBA, and NFL inventory ranging from dollar boxes to graded rookies and autographs, and you will typically find a few tables of Funko Pops, anime merchandise, and other collectibles. Trading is a big part of the culture at every SD Card Club event, so many attendees bring binders specifically to swap.
The show runs from 12:00 PM to 4:00 PM. The four-hour afternoon window keeps it compact; the busiest trading and best showcase pulls happen in the first ninety minutes, while the last hour is when vendors are most willing to cut a deal rather than pack a card back up.
Admission is free and the event is open to all ages. No tickets are required. Giveaways run during the show, so check in at the host table when you arrive. Because Common Theory is a restaurant and bar, adults can order from a full menu and a deep craft tap list while browsing, and the kitchen is a highlight in its own right.
Common Theory Public House is located at 4805 Convoy Street, San Diego, CA 92111, in the Kearny Mesa area just off Highway 163 and Balboa Avenue. Parking is in the shared lot and along nearby streets; the Convoy District gets busy on weekends, so arriving a few minutes early makes finding a spot easier. The neighborhood is home to some of the best Asian dining in Southern California, which makes it simple to extend the outing with a meal before or after.
This show fits casual collectors, families, and anyone who prefers a social setting over a convention hall. Traders will find an engaged crowd, and Pokemon and One Piece collectors in particular will find strong inventory. Serious sports card buyers should treat it as a supplement to the larger weekend shows rather than a replacement.
To make the most of it, arrive at noon, bring cash and a sorted trade binder, and lap the entire room before buying. Have a want list ready and ask vendors about cards not on display; many bring extra inventory in boxes under the table.
Follow SD Card Club on Instagram at @sdcardclub or visit cardsandcollectors.com for updates. Vendor inquiries go to [email protected] or 619-734-6771.