Q & A
How can I tell if a signature is printed?
A printed signature is less a forgery than a reproduction. The mark was printed into the image along with everything else — usually by a studio, a publisher or a fan-mail department — and often with nobody intending to deceive anyone at all. It becomes a problem the moment it is resold as an original. The good news is that this is the easiest category of fake to catch, because ink lying on a surface and ink printed into one behave differently under nothing more sophisticated than a desk lamp.
Where printed signatures come from
Studios and publicists have mailed out preprinted photographs for as long as fans have written in. Cast photos, publicity stills, promotional prints, book plates and the “signed” inserts in limited editions were frequently produced in the thousands with the signature already in the artwork. Decades later those pieces surface at estate sales and in inherited boxes, indistinguishable from originals to anyone who has not looked closely.
Most of the people selling them are not forgers. They are owners who assumed a signature on a photograph was a signature on a photograph. That is worth remembering when you raise the question with a seller — and it is also why you have to raise it yourself rather than wait to be told.
1. Tilt it under a light
Hold the item so a lamp rakes across it at a low angle and look along the surface rather than straight down at it. A real signature interrupts the gloss of a photograph: the stroke sits on the emulsion, catches the light differently from the surrounding sheen, and leaves faint relief where the pen changed direction or pressed hard.
A printed signature has no relief and no separate sheen, because it is part of the image. Under raking light it disappears into the photograph while a real one stands out from it. This single check disposes of most preprinted material in a few seconds.
2. Look at the edges under magnification
A loupe or a phone camera at full zoom is enough. Printing is made of dots. Offset and halftone printing produce a regular rosette pattern, inkjet a fine spray of separated dots, laser output a slightly raised toner sheen with sharply uniform edges. Follow the stroke to a curve or a crossing and the pattern continues through it unchanged.
Handwritten ink does the opposite of uniform. The line varies in width and density along its length, pools where the pen paused or reversed, thins where it moved fast, and occasionally skips where the ball or nib lost contact. Any stroke that holds exactly the same weight from beginning to end deserves a second look.
3. Feel the surface, and check the back
A ballpoint leaves an indentation you can often see from the reverse of a photograph or feel with a fingertip. A felt tip bleeds slightly into the surface and may show through on thinner stock. A printed signature leaves the back of the item completely undisturbed.
One caution: modern prints are sometimes laminated or clear-coated, which flattens everything and defeats the touch test. If the whole surface feels sealed, treat the tactile checks as inconclusive rather than as a pass, and rely on magnification instead.
4. See whether the same signature exists elsewhere
Search for the same photograph online and compare. If other copies of the image carry a signature in the identical position, at the identical size, with the identical stroke path, it was printed — no human hand places a signature twice in exactly the same place at exactly the same scale.
This is also the check that catches the harder version of the problem: a genuine studio photograph on which a facsimile signature was printed as part of a later reissue. The image is authentic, the paper is period, and the signature was never signed by anybody.
5. Ask the seller a direct question
“Is this signature original ink, or preprinted?” is a fair question and an honest seller answers it in one line. Then ask for the item flat, in daylight, shot straight on, plus one photograph taken with the light raking low across the surface. That last frame is the one that shows relief, which is why a seller with a printed piece often finds a reason not to take it.
How to shoot photographs an examiner can actually read →
Printed is not the only mechanical signature
Once you have ruled out printing, two other categories remain and neither is caught by any of the checks above. An autopen applies real ink with a machine, so it passes the lamp test, the loupe test and the indentation test while still not having been signed by the person named. A secretarial signature is genuinely handwritten, just by somebody else.
That is the point where the checks you can run at your kitchen table run out. For entertainment material, Piece of the Past examines this category daily and will look at photographs of a piece you already own — describe the item, say where it came from, and send a clear set of images.