Great value. Very quick turnaround time. Friendly service. Will use them again and recommend to others.

lightning fast turnaround. Fair grading. All any collector can ask for.

Perfect

Another great slab and quick turnaround by Sigma grading. The green bumper that was thrown in to match the green Prizm Arch Manning made the card really pop! Can’t wait to submit more cards and see the results!

These turned out great. I appreciate you providing the colors I wanted for the protectors too. Only had to switch out two of them to have my slabs looking exactly how I wanted. Will purchase again.

I was a bit skeptical, but Sigma Card Grading came through big time! I sent in a 10-pack and the price was solid. Definitely didn’t break the bank. The cards came back looking super clean and way nicer than I expected. Next round I’m gonna throw in a couple orange bumpers for extra color pop.

Totally recommend Sigma if you want your cards to look fresh without spending a ton.

Love the slabs, also love the fact I don’t have to pay for return shipping. My penny sleeves and card holders were returned which I wasn’t planning on but that was also very nice. Will definitely be sending more to Sigma, only wish they did autos and patch cards, but maybe in the future. Thx again, great experience!

I like how the slabs turned out. Also the duck was cool lol

Good price. Cards look nice. Thank you.

Thanks. Very happy with our order.

Cool slab. I was kinda skeptical for the price but honestly great- graded fairly and I had it back in a week.