How to identify antiques at an estate sale
Identifying an antique at an estate sale is three moves made standing up: read the mark, read how the thing is put together and where it has worn, then recognise the point where the object is past what you know.
Patina is not open yet, so anything on this page about what it does is what it is being built to do.
The order to work the object in
The method is short because the room is short. Turn the object over and look for a mark. Look at how it was made. Look at where it has worn. Weigh it in your hand. Then, if it is still a stranger, photograph it and scan it.
That sequence matters more than any single cue, because each step tells you what to ask of the next one. You are standing in a dining room holding a number. There is a brass thing on the sideboard with a mark on the base you cannot read, a woman two people behind you who has already picked it up once, and a runner who will not hold anything for you. The question in your head is the one that gets posted in collector groups over and over: found this at an estate sale, what is it? Junk or treasure? Is it actually antique or just old?
Most writing about identification assumes an afternoon and a reference library. You have the walk from the sideboard to the window where the light is better. So you do what everyone does, which is photograph the mark, run a general image search, and get back a page of modern reproductions on a marketplace, telling you nothing at all about the object in your hand.
The rest of this page is the in-aisle version of the work. If you are still learning how a sale itself runs, our beginners guide to working a sale covers the running order and the etiquette. If you want the app's own specifics, the plans and the account side, our estate sale identifier app page sets those out. The thrift and charity-shop page covers the slower version of the same problem on a shelf.
Read the mark first, even when you cannot read it
Marks are the cheapest information in the room, and they live in predictable places. On ceramics, the base. On silver and plate, the underside, the foot rim, the edge near the lip, and often a repeat mark on a lid or a handle. On furniture, the back edge of a drawer, the inside of the carcass, the underside of a seat rail, and the back of a mirror plate. On clocks, the dial and the movement backplate. On bronze and spelter, the back or underside of the base, sometimes with a foundry stamp alongside a signature.
Photograph it even if it means nothing to you. An impressed mark you cannot make out still carries shape, depth and placement, and a worn hallmark still carries the number of punches and roughly where they sit. That is the single most common question collectors ask of each other, and it is the one a photograph handles best.
While you are there, notice how the mark was applied. An impressed or incised mark was made in the body before firing. A printed or transfer mark sits on the surface under the glaze or over it. A paper label is a label, easily added and easily swapped. None of this settles anything on its own, because marks have been copied for as long as marks have been worth copying, which is exactly why the next two checks exist.
Then construction, wear and weight
How it is put together
Construction usually outlasts finish. Look at joinery and how drawers are assembled, whether screws and nails look hand cut or modern and uniform, whether a seam is hand finished or machine even, whether the underside and the back are left as rough as the front. Makers had habits, and habits show up in the parts nobody polished.
Where the wear is
Honest wear lands where hands, feet and cloth actually go: the front edge of a drawer pull, the base ring of a vase, the high points of a carving, the inside of a handle. Wear that is spread evenly across a surface, or wear on a face nobody would ever touch, is worth a second look before you reach for your wallet.
What it weighs and what it sounds like
Pick it up. Weight, temperature in the hand, the note a ceramic gives when tapped gently with a fingernail, the way a glaze pools and crazes, the colour of metal inside a scratch that was already there. Each of these is weak evidence alone and strong evidence together.
When the cues disagree
This is the useful part of working in order. A convincing mark on a piece whose construction looks modern, or heavy wear on something that otherwise looks untouched, is a disagreement, and a disagreement is the signal to slow down rather than to decide. That is also the moment a scan earns its place, because you are no longer looking for reassurance, you are looking for a name to think with.
How a scan fits into the five minutes
- Take the photo, or use the one you already have
Patina opens in your phone's browser, so there is nothing to install while you are standing there, and the signed-in screens sit in a phone app shell with a bottom tab bar so it reads like an app rather than a website. Capture with the device camera, or choose a photo you shot earlier in the sale. Both routes are offered and both sit in thumb reach. Fill the frame with the mark, the signature or the detail you are unsure about, and find window light if the room has any. One clear photograph of one thing beats a wide shot of the whole sideboard.
- Get a name to think with
The photo goes to a multimodal vision model, run through Anthropic, which comes back in plain English with who appears to have made it, roughly when, and where. That is usually the missing piece. A provisional name is enough to reason with, and reasoning is what you could not do a minute earlier.
- Read the confidence line before the rest
Every result carries a confidence level, and it is the part worth reading first. High confidence means the reading is worth leaning on as a second opinion next to what your own eye found in the construction and the wear. Low confidence means the photo, the mark or the object itself did not give the model enough to work with, and the reading is a starting point rather than an answer.
- Take the triage flag seriously
When confidence falls below the threshold, Patina raises an appraisal triage flag and offers a referral link to an independent appraisal service. That flag is an honest outcome, not a failure. It tells you this object is the kind of thing that pays for an expert eye, which is genuinely worth knowing before you commit money in a room where you cannot take your time.
- Decide, and keep the record
The result screen carries a persistent note that this is an AI-generated estimate rather than an expert appraisal, and it never shows a dollar value. You still make the call. Your last ten scans stay in your history, so when you get home you have the marks, the readings and the confidence levels for everything you looked at, not only the things you carried out.
Why this suits the person who goes most weekends
A name for the thing you cannot read
It is signed but the signature is a scrawl, or the hallmark has worn to a smudge. Patina is built to read what is visible in the photograph into a probable maker, a period and a place, which turns an anonymous object into one you can argue with yourself about.
A second opinion, framed as one
You already know a great deal about the categories you collect, and nothing here is trying to replace that. The value sits at the edges, in the unfamiliar object in an unfamiliar category, so results are written as a second opinion rather than a verdict, because that is what a photograph and a model can honestly support.
Clarity on when to pay for an expert
Is it worth paying for an appraisal is a real budgeting question when you are looking at forty objects and a queue. The confidence-gated flag is built to answer it one object at a time, pointing you to an outside appraisal service only when the reading cannot stand on its own.
No invented numbers, ever
Patina does not print a price on anything. Identification is our job and valuation is someone else's, and a figure produced by a model from a photograph would be a guess dressed up as a number. You get what the object appears to be, and an honest measure of how sure we are.
Honest about the referral links
The appraisal services behind the triage flag are independent businesses we have no partnership with, and the links may be affiliate links. They carry a tag naming Patina and nothing about you or your scan, and we record only that a referral link was clicked, so we can tell which referrals are actually useful.
Three free scans a month, then unlimited
Free gives you three identifications a calendar month. The estate sale identifier app page sets out what each plan includes.
What Patina answers, and what it leaves alone
| The question in your head | What Patina does with it |
|---|---|
| Can anyone help me identify this maker's mark? | Reads the photograph and names a probable maker, with a confidence level attached to it. |
| Is it actually antique or just old? | Returns an estimated period and place of origin, labelled plainly as an AI estimate rather than a certificate. |
| Reproduction or period? | Reports what it reads from the image. Where the read is weak you get a low confidence level and the appraisal flag instead of a confident guess. |
| Is this worth anything? | Nothing at all. Patina never shows a dollar value. That question belongs to an appraiser or to a completed-sales record, not to us. |
| Is it worth paying for an appraisal on this one? | Below the confidence threshold, Patina raises a triage flag and offers a referral link to an independent appraisal service we have no partnership with. |
| Can I use the photo I took an hour ago? | Yes. Capture runs from the device camera or from a photo already on your phone, in a mobile browser. |
Questions
Can an app really identify an antique from one photo?
It can give you a reading, not a ruling. Patina sends your photo to a multimodal vision model that comes back with a probable maker, a period, a place and a confidence level, and the confidence level is the part that matters. A strong read is a useful second opinion next to what your own eye found in the construction and the wear. A weak read tells you the object needs an expert, and Patina says so with a triage flag rather than guessing louder.
What if the maker's mark is worn or I cannot read it?
Photograph it anyway, as close and as well lit as the room allows. A partial or rubbed mark still carries shape, placement and impression depth, and that is often enough to narrow things. If the result comes back with low confidence, that is the model being honest about a hard image, and it is exactly the case the appraiser referral exists for.
How do I tell a reproduction from a period piece in the aisle?
By disagreement rather than by one clue. A mark can be copied, so the useful test is whether the mark, the construction and the wear tell the same story. Even joinery with fresh-looking fixings, or heavy wear on a face nobody touches, is a reason to slow down. Patina reports what it reads from the image and attaches a confidence level, so a weak read shows up as a weak read instead of a confident answer.
Can I scan a photo I already took?
Yes. Capture runs in a mobile browser and offers both routes, taking a photo with the device camera or choosing one already on your phone. That matters at a sale, because you often shoot five marks quickly and only get a quiet minute to look at them in the car. There is nothing to install before you go, and you sign in with an email address and password so your plan and your history stay attached to you.
Will Patina tell me what something is worth?
No. Patina never shows a dollar value, and every result screen carries a persistent note that the identification is an AI-generated estimate rather than an expert appraisal. Identification is our job. Valuation belongs to an appraiser or to completed-sales records, and pretending otherwise would not help you at the pay table.
Are the appraisal services you link to partners of yours?
No, and we would rather say that plainly. When a result falls below the confidence threshold, Patina offers a referral link to an independent appraisal service. These are businesses we have no partnership with, the links may be affiliate links, and they carry a tag naming Patina and nothing about you or your scan. We record that a referral link was clicked so we can tell which referrals are useful.
What happens to the photos I take?
We store your name, email address and password hash, the photos you scan and their results, your subscription status with a Stripe customer reference, the plan you picked and the campaign tag you arrived with, clicks on appraiser referral links, and a log of account email we send you such as a password reset. Photos are processed by Anthropic to identify the object, payments run through Stripe, account email goes through Amazon SES, and the application sits on Amazon Web Services in the United States. Photos and results are kept while your account exists so your history works. Write to us from your account email, at the contact address on this site, and we remove the account, its photos and its history within 30 days. There is no self-serve deletion or export inside the app yet, and we hold no SOC 2 or ISO 27001 certification. Our terms and privacy policy name the company that sells Pati
When can I use it?
Patina is in build and not yet open to the public, so there are no users, results or reviews to point to. Join the waitlist and we will tell you when the first scans go live.