Nominee for Grading Company of the Year

TAG (Technical Authentication & Grading) brings a technology-driven approach to the hobby, offering a 1,000-point grading scale powered by photometric stereoscopic imaging. Each slab includes a QR code that links to a digital grading report, giving collectors detailed subgrades and population data.

By emphasizing transparency and precision, TAG represents a modernized take on card grading. Its combination of advanced imaging, data accessibility, and collector-friendly design highlights how technology can create new standards for trust in the grading process.

Collectors, Meet Your New Favorite App

Your new home for all things collectible. Whether you’re into sports cards, comics, TCGs, watches, coins, stamps, sneakers, or any other collectibles, Mantel brings enthusiasts together to connect, share, and explore.