Grading, authentication, auction houses and appraisers
National services, described from each company's own pages. Listed alphabetically within each group. We do not rate, rank or endorse them, and a grade or certificate is the issuer's opinion, not a guarantee.
Grading & authentication
- Beckett: Listed under "Our Brands" on collectors.com (own site, checked 2026-11-10)
- CGC Cards: Describes itself as "the division of CGC devoted to the expert grading of collectible cards"; Covers TCG, sports and non-sports cards; Part of the Certified Collectibles Group; Offers certification verification, pop report and registry (own site, checked 2026-11-10)
- JSA (James Spence Authentication): Page title "JSA"; tagline "Your Premiere Autograph Authentication Service"; name "James Spence Authentication" (own site, checked 2026-11-10)
- PSA: Listed under "Our Brands" on collectors.com (Collectors Holdings, Inc.) (own site, checked 2026-11-10)
- SGC: Listed under "Our Brands" on collectors.com (own site, checked 2026-11-10)
Insurers & storage
- PSA Vault: Listed under "Our Brands" on collectors.com (own site, checked 2026-11-10)
Auction houses
- Christie's - Sports Memorabilia: Department "Sports Memorabilia" in Christie's site navigation (url /en/departments/sports-memorabilia) (own site, checked 2026-11-10)
- Fanatics Collect: Page title "Fanatics Collect | Sports Cards, Pokémon & Auction Marketplace"; Navigation lists Buy Now, Auction, Premier, Sold, Private sales, Dealer program, Sell your cards; PWCC appears only in app-store URLs on the page; no statement that Fanatics Collect is the former PWCC is recorded here (own site, checked 2026-11-10)
- Goldin: Page title "Goldin | The Global Go-To For High-End Collectibles"; Meta description: "Goldin is the leading marketplace for trading cards and collectibles" (company's own claim) (own site, checked 2026-11-10)
- Hunt Auctions: Sports memorabilia; live and internet auctions; consignment; online store; hologram authentication database; Address listed: 256 Welsh Pool Rd. Exton, PA 19341; States it has been in business "over 36 years" (company claim) (own site, checked 2026-11-10)
- Robert Edward Auctions (REA): "Specializing in Sports Cards & Memorabilia, Americana, TCG and other Non-Sport Items"; Fixed price marketplace announced on the page (own site, checked 2026-11-10)
- Sotheby's - Sports Memorabilia: "Sports Memorabilia" listed under Collectibles in "Shop by Category" (own site, checked 2026-11-10)
Appraisers
- American Society of Appraisers (ASA): Home page links to a "Find an Appraiser" directory (myaccount.appraisers.org/Directories/Find-An-Appraiser) and lists a help line 800-ASA-VALU (own site, checked 2026-11-10)
- International Society of Appraisers (ISA): Find an Appraiser page: "Search for a qualified ISA appraiser to appraise your valuable items or fine artwork. Use the browse categories below to further search by location" (own site, checked 2026-11-10)