We specialize in buying and selling rare and unique sports cards. We sell cards on consignment at fair market prices. And we also offer authorized PSA card grading.
Grand Slam Sports Cards is an Official Vendor at the "2023 National Sports Collectors Convention"
EVENT DETAILS:
Donald E. Stephens Convention Center
Rosemont, IL
July 26th - July 30th
Grand Slam Sports Cards is an Official Vendor at the "2023 National Sports Collectors Convention"
EVENT DETAILS:
Donald E. Stephens Convention Center
Rosemont, IL
July 26th - July 30th
Browse Our Inventory
If you see something you like, we're ready to make a deal either at our next show, or via an online intermediary.
Authorized Card Grading
We are an authorized PSA & SGC submission dealer offering professional grading and slabbing for your cards.
Sell On Consignment
Want to sell your cards but not sure where to start? We'll sell them on consignment at fair market prices.
Browse By Category
Already know what type of card you’re looking for? Click a category to get started, and you’ll be able to narrow it down from there.
Praise for Grand Slam Sports Cards
I have done a number of deals with Tim at Grand Slam Sports Cards. Every time I see him he has new and good inventory available for sale.
Tom Hughes
Director, Dave & Adams Card World
Tim has been a customer of Quick Consignment 802 for some time now. He's one of the easiest and most reputable dealers I have ever worked with. He's trustworthy, honest and fair. I always look forward to seeing and working deals with Tim.
Seth Nelson
Partner, Quick Consignment 802
Tim and the guys have been to all of the big shows across the country supplying a great inventory and a great time. You can tell it’s more than just about the cards for them, It’s about the people and the Memories they make along the way thanks to these pieces of cardboard!
Tyler Santiago
Owner, Tyler Santiago
As a long-running family-run company, Grand Slam Sports Cards has long been a staple in the pastime. At its base in the Chicago region and at trade exhibitions across the nation, they offer a fantastic range of sports cards/memorabilia and excellent service". "Having upright and honest business executives is refreshing
Demian Werner
CEO, MBA/Mike Baker Authenticated
I have submitted thousands of cards for PSA grading through Tim at Grand Slam Sports Cards and I have nothing but positive things to say about Tim and the entire process. I have gotten to know Tim well over the past few years and I trust him enequivocally.
Marc Sonnabend
Uncommon Curator
Show Schedule
Mark your calendars and join us at upcoming trade shows. We love connecting with fellow sports card enthusiasts and sharing our passion.
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About Us
We strive to be your go-to source for top-quality cards and a seamless collecting experience. But here’s a little peek behind the scenes.
Grand Slam Sports Cards was developed with the idea of offering a combined way for the sports card collector to be able to purchase, consign, grade and invest in sports cards.
We're working hard to build a reputation as the go-to brand in the sports card industry.
Our Core Values
At Grand Slam Sports Cards, we are committed to providing exceptional customer service and helping to foster a passionate sports card community.
Credible
Innovative
Community
Passion
Get In TOuch
Whether you have a question about consignment, grading, purshasing from our inventory, or simply want to chat about sports cards, send us a message!