Every household has one. A silver tray from an estate sale, a porcelain teacup inherited from a grandparent, a brass handle salvaged from a barn. It sits on a shelf for years until someone finally asks the question every collector asks eventually: what is this, and is it worth anything?
For most of the last century, answering that meant a trip to a dealer or an appraiser, and taking their word for it. Today the first pass can happen on the kitchen table with the phone already in your pocket. Photo identification apps have gotten good enough to read a maker’s mark, place it against the registers, and pull comparable auction results in a few seconds. But they can only read what you show them, and most people photograph the wrong part.
The part nobody photographs
Point a camera at an antique and the instinct is to frame the whole object, the way you would for a listing. That photograph tells an app almost nothing. The information that actually identifies a piece lives on the surfaces you never look at: the base of a vase, the underside of a saucer, the inside of a lid, the back of a brooch, the shank of a spoon. That is where makers stamped their marks, where assay offices struck their hallmarks, and where a factory printed its backstamp.
So the first rule is to turn the thing over. The second is to get close.
Photographing a mark on an iPhone
A hallmark on a teaspoon can be under three millimeters tall. Standing back and zooming in will not resolve it; digital zoom throws away the pixels you need. Get the lens physically close instead. Every Pro model since the iPhone 13 Pro, and the standard iPhone 16 and later, switches to macro automatically when the lens is within a few centimeters of the subject, which is exactly the range a mark needs. On older models, go as close as the camera will still focus, then crop later.
One catch: at macro distance the phone itself often shades the mark. If that happens, pull back a few inches and shoot at 2x instead. On recent iPhones the 2x mode crops the 48-megapixel main sensor without losing real detail, and it leaves room for light to reach the stamp. If the camera keeps jumping between lenses, turn on Macro Control under Settings > Camera and switch it manually.
Three habits make the difference between a readable mark and a blur:
Tap to focus on the mark itself, not the object. The camera will otherwise lock onto the larger, brighter surface next to it. Tap the stamp to set focus, then press and hold until AE/AF Lock appears so the camera does not refocus as you shoot.
Kill the reflection. Silver and glazed porcelain act as mirrors. If the mark disappears under a bright patch, move the light rather than the object: turn off the overhead lamp, use a window at a low angle, or shade the piece with your free hand. Light raking in from the side is what makes a struck mark cast a shadow and become legible.
Take several, rotating the piece a quarter turn each time. A mark that is unreadable at one angle often snaps into focus at another. Storage is cheap, and the app can be given all of them.
Do not use flash. It flattens the relief that makes a stamped mark readable, and on silver it produces a white blaze where the mark used to be.
What the mark tells you, and what it does not
Here is the part that separates a useful answer from a hopeful one. A mark is evidence, not a verdict. It can tell you who registered the mark, the town or country whose system it follows, and sometimes the year. It cannot, on its own, tell you whether the piece is genuine or what it is worth, because marks are the easiest part of any object to fake.
A small example shows how much a mark can carry once it is read correctly. Many silver-colored pieces are stamped EPNS. It stands for Electro Plated Nickel Silver, and it is the maker’s own statement that the object is plated rather than solid. The body beneath the plating is a copper alloy, roughly 60 percent copper, 20 percent nickel and 20 percent zinc, and it contains no silver at all. It took the name from its color. That color is also why platers chose it: when the thin silver coat wears through, the metal underneath is close enough in tone that the wear is hard to see. Four letters, read properly, answer the question that decides most of the value.
An app that can read a mark, place it and explain it does the work of a shelf of reference books. What it should not do is invent a number. A responsible identification returns a value range built from comparable sales that actually happened, with the uncertainty visible, rather than a single confident figure that sounds better than it is.
Where the phone stops
The phone gets you through the first gate quickly: what the piece is, roughly when and where it was made, and what similar pieces have sold for. That is enough to decide whether a box goes to the donation truck or to a specialist, whether a listing is priced at $40 or $400, and whether the piece in your hand at an estate sale deserves a second look before someone else picks it up.
It is not enough to settle authenticity on anything valuable. A hallmark can be transposed from a genuine piece onto a fake, a backstamp can be reproduced, and a signature can be added later. For those cases, a physical inspection by someone who handles the category every day is still the answer, and a good app will say so rather than pretend otherwise.
Antique Identifier publishes free guides on reading silver marks, porcelain backstamps and furniture periods, alongside Antiqly, an iPhone app that identifies a piece from a photograph and returns an estimated value range. Whichever tool you use, the habit is the same. Turn the object over, get the lens close, move the light until the mark casts a shadow, and let the phone read what generations of collectors had to learn the hard way.
