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Universal Signature Authentication Services – Providing Certification of Authenticity – Memorabilia Signature Authentication Service — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Collecting →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
amaonline.com.au ↗	64 match 1 shared topics	Australian Memorabilia Association	AU en	collecting WordPress WooCommerce	robotsllmsaihumans	emailphone	none
hbrart.com ↗	64 match 1 shared topics	HBR Art: Vintage Rare Animation Art and Memorabilia	en	collecting	robotsllmsaihumans	emailphone	none
luxury-appraisals.com ↗	64 match 1 shared topics	Luxury-Appraisals.com – The Best Luxury Appraisals & Authentication	en	collecting WordPress	robotsllmsaihumans	emailphone	none
playcardbazaar.com ↗	63 match 1 shared topics	Sports Memorabilia Jerseys, Trading Cards & Collectible Coins	en	collecting WordPress WooCommerce	robotsllmsaihumans	emailphone	none
usamemorabilia.com ↗	63 match 1 shared topics	USA Memorabilia \| Exclusive Collections	en	collecting Shopify	robots llmsaihumans	emailphone	none
sweatmemorabilia.com ↗	63 match 1 shared topics	Sweat Memorabilia LLC	en	collecting Shopify	robots llmsaihumans	emailphone	none
samakomphrapantip.com ↗	63 match 1 shared topics	SamakomPhraPantip \| Trusted Thai Amulet Marketplace & SAG Certification	en	collecting	robotsllmsaihumans	emailphone	partial · 8
aynecollectables.com ↗	63 match 1 shared topics	Are You Not Entertained \| Original Movie Posters & Signed Memorabilia	en	collecting Squarespace Magento	robotsllmsaihumans	emailphone	none
famousdaredevils.com ↗	63 match 1 shared topics	Evel 1 - Evel Knievel Memorabilia and Merchandise	en	collecting	robotsllmsaihumans	emailphone	none
3liteguy.com ↗	63 match 1 shared topics	3 Feet From The Street – 3liteguy Signal Salvage – Traffic Signals for Sale	en	collecting WordPress	robotsllmsaihumans	emailphone	none
utcny.com ↗	62 match 1 shared topics	Be Extraordinary - Universal Time Company of New York, Inc.	en	collecting WordPress WooCommerce	robotsllmsaihumans	emailphone	none
acerarecollectibles.com ↗	62 match 1 shared topics	Autographed Collectibles Beverly Hills \| Sports Memorabilia	en	collecting Weebly WooCommerce	robotsllmsaihumans	emailphone	none
awauthentic.com ↗	62 match 1 shared topics	:: AW Authentic ::	en	collecting	robotsllmsaihumans	emailphone	none
bargainbloodhoundannex.com ↗	62 match 1 shared topics	Collectibles, Books Music, Paper Memorabilia,Toys Diecast \| TulipStuff	en	collecting Shopify	robotsllmsaihumans	emailphone	none
bargainbloodhoundcollectibles.com ↗	62 match 1 shared topics	Collectibles, Books Music, Paper Memorabilia,Toys Diecast \| TulipStuff	en	collecting Shopify	robotsllmsaihumans	emailphone	none
ballsofsteelpinballandcollectibles.com ↗	62 match 1 shared topics	Balls Of Steel Pinball And Collectibles – Pinball machines and animation collectibles	en	collecting WordPress	robotsllmsaihumans	emailphone	none
nameft.com ↗	62 match 1 shared topics	NameFT – First NFT collection of dedicated art to names.	en	collecting WordPress	robotsllmsaihumans	emailphone	none
adamantineminerals.com ↗	62 match 1 shared topics	Adamantine Minerals - Authentic Minerals for Collectors	en	collecting Shopify	robots llmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.