Preprinted & Stamped Autographs: How to Tell Ink From Print

How preprinted and stamped autographs are made, why they aren't authentic signatures, and simple checks collectors can use to tell real ink from print.

By the MAS Certified authentication team · Updated October 2026

A preprinted autograph is a signature reproduced as part of the printing process — on a photo, poster, card or program. A stamped autograph is applied with a rubber or self-inking stamp. Both are reproductions, not hand-signed autographs, and both are regularly sold as the real thing.

Why preprints fool people

Many official photos and posters come with the signature already printed on them. Once framed behind glass or photographed for a listing, it can be hard to tell the difference. Stamps can look convincing too, especially in a quick glance.

Simple checks you can do

Real ink sits on top of the surface and catches light differently from the rest of the image. Print is part of the image itself.

Tilt it under light — real ink usually shows a different sheen
Use a magnifier — print shows tiny dot patterns, ink shows solid lines
Look for indentation from pen pressure on paper
Check whether the signature continues smoothly over the image or is part of it
Stamps often show even, flat ink with crisp but slightly blotchy edges

When to get an expert review

If an item is framed, slabbed, or listed only with photos, you may not be able to check it yourself. That's when an expert review protects you before you buy.