Three Simple Steps
How Authentication Works
Upload
Take a photo or upload an image of the signature you want to verify.
Authenticator review
An authenticator with full-time experience in entertainment autographs compares your signature to the signer’s exemplar history, checks era and substrate, and weighs marketplace context.
Verdict + certificate
Verdict ladder: Confident·Authentic, Likely·Authentic, Pre-Print, Inconclusive, Likely·Forgery, Confident·Forgery. Authenticator’s opinion. Certificate number anchors the record. Quick is 24 hours. Rush is 2 hours (7am–7pm PT). Deep is 3 days with extended exemplar review.
Real-World Scenario
Authenticate without leaving the listing
A signed Harrison Ford photo hits eBay at 2 a.m. Buy It Now, $400. Tap Authenticate this listing in Grail Den. The item routes to a working Screen Grade authenticator. You stay in the app.
Rush tier (7am–7pm Pacific) returns a verdict in 2 hours, so you can decide inside the bidding window. Outside those hours your piece queues at 7am Pacific. The certificate stays on your account and travels with the item.
Authenticator bench
Experienced authenticators. Working entertainment vertical.
Authentication is delivered in partnership with Screen Grade. A working bench of authenticators with full-time experience in entertainment autographs reviews every submission against the signer’s exemplar history, era and substrate, and marketplace context. Names stay private. The verdict, the evidence, and the certificate number are public, and durable. Your submissions are handled according to our Privacy Policy.
Quick Opinion Comparison
Autograph Authentication: Quick Opinion Comparison
How Grail Den compares to quick opinion services offered by traditional authenticators.
How do quick opinion services compare? The table below shows photo-based authentication services, not full mail-in certification.
| Service | Type | Cost | Turnaround | Notes |
|---|---|---|---|---|
| SWAU | Photo review | $10 | ~24 hours | All categories. Flat $10 photo opinion, ~24h turnaround. Lifetime guarantee on witnessed items only. |
| Beckett (BAS) | Photo review | $10 | 24–48 hours | All categories. Pass/fail opinion. $10 credit toward full auth if submitted within 90 days. |
| PSA/DNA | n/a | n/a | n/a | QuickOpinion service discontinued April 2025. Full authentication starts at $20+ and takes 30+ business days. |
| JSA | n/a | n/a | n/a | No quick opinion service. Full authentication requires mail-in submission. |
| Grail Den × Screen Grade | Photo review | From $8 | 2h Rush (7am–7pm PT) · 24h Quick | Entertainment specialty. Verdict (the only service with a Pre-Print state). 2-hour Rush turnaround (7am–7pm Pacific) for live bidding windows. Multi-signed pieces priced per name (+$3 each). Authenticator’s opinion. Certificate number on file. |
Pricing
Three tiers. One verdict ladder.
No credits, no bundles, no expiring tokens. You pay for the opinion. The certificate stays on your account.
Don’t know who signed it? Add an unknown-signer slot for $5 each. The authenticator identifies it. Refunded if the signal is too low to call.
Coverage
Any signer in the entertainment vertical.
Film, television, streaming. Cast, crew, directors, designers, the named hand on a one-sheet, the script supervisor on the day. The authenticator’s first reference is the signer’s own hand on file.
If a signer doesn’t have an exemplar set on file yet, the authenticator can call for additional comparators, or return Inconclusive with a written explanation. No franchise gate. No "is this person on our list" filter.
Beyond Authentication
The Complete Collector’s Platform
Authentication is just the beginning.
Global Hunt
15 Marketplaces. 8 Languages. One Search.
Search eBay US, UK, Germany, France, Italy, Spain, Australia, and more, all at once. Queries auto-translate so you find items listed in any language. Prices convert to your currency instantly.
TTM Database
Pro: 201K+ Addresses
Plan your Through The Mail autograph campaigns with the largest mailing address database available to collectors. Actors, directors, athletes, musicians. Look up anyone.
Collection Tracking
Your Collection, Organized
Catalog every piece with photos, provenance chains, and condition grading. Track value over time. Generate insurance reports for your entire collection with one click.
Market Research
Authenticator-Calculated Value · Live Auction Tracking
Research sold comps from Propstore, Heritage, Julien’s, and dozens more auction houses. See what items actually sold for, including buyer’s premium, so you never overpay.
Get Started
Ready to Verify?
Your First Assessment Is on Us.
Upload a photo, get a verdict from a working authenticator. Rush returns in 2 hours. No credit card required to start.
Start FreeAuthentication assessments are informational tools only and do not constitute professional authentication, appraisal, or guarantee of authenticity. Results should be used as one factor in your purchasing decisions alongside other due diligence.