How to Identify Antique Furniture (Marks, Joints & Age Clues)
You don't need to be an expert to tell whether a piece of furniture is genuinely old. The construction itself tells the story — how the drawers are joined, how the wood was cut, what the hardware and finish look like. Here's what to check, roughly in order, before you buy or sell.
Start underneath and inside
The parts nobody bothered to make pretty are the most honest. Pull out drawers, turn pieces over, and look at backs and undersides for tool marks, wear, oxidation, and construction — this is where age shows and where reproductions get lazy.
The biggest tells
Dovetail joints. Look at the corners of drawers. Hand-cut dovetails are slightly uneven, few in number, and vary in spacing — a sign of pre-1890s work. Perfectly even, uniform dovetails mean machine-cut (post-1860s and increasingly after ~1890). Fake "dovetails" that are actually routed or a single wide pin suggest a modern reproduction.
Saw marks. Straight saw marks suggest earlier hand or sash sawing; consistent circular arc marks point to a circular saw (common after the mid-1800s). No visible saw marks at all can indicate modern machining.
Wood and secondary woods. Older pieces often pair a "show wood" (walnut, mahogany, oak) with a cheaper "secondary wood" for drawer sides and backs. Plywood, MDF, or particleboard anywhere means it is not a true antique.
Hardware. Look for wear consistent with age, hand-cast irregularities, and old screws (early screws have off-center, hand-filed slots and blunt tips; modern screws are perfectly uniform with sharp gimlet points). Replaced hardware leaves extra filled holes — check for ghost marks.
Finish and patina. Genuine age brings uneven fading, a soft mellow patina, and wear where hands and bodies actually touch. Suspiciously even color, a plasticky sheen, or wear in places that wouldn't naturally get used are red flags.
Read the marks
Check for maker's stamps, labels, brands, and patent numbers on the back, base, inside drawers, or under the top. A patent number or design registration can date a piece precisely. Note any names — an identifiable maker can change value substantially (part of provenance; see valuing antiques).
A quick age-clue cheat sheet
| Clue | Likely older | Likely newer/repro |
|---|---|---|
| Dovetails | Hand-cut, uneven | Uniform machine / routed |
| Saw marks | Straight or none visible | Circular arcs (post-1850s) |
| Screws | Off-center hand-filed slots | Uniform, sharp points |
| Materials | Solid + secondary hardwoods | Plywood, MDF, particleboard |
| Finish | Mellow, uneven patina | Even color, plastic sheen |
Don't confuse old with valuable
Confirming age is step one, not the whole story — condition and demand decide worth. A genuine antique in rough or heavily refinished shape can be worth less than a pristine vintage piece. For the difference in terms, see antique vs vintage vs retro; for what actually commands money, see what antiques are worth the most.
Frequently asked questions
How can I tell if furniture is a genuine antique?
Check the construction: hand-cut, uneven dovetails; solid wood with a secondary hardwood inside; old irregular screws and hardware; and a mellow, uneven patina. Plywood, particleboard, or perfectly uniform joints indicate a newer piece or reproduction.
Where do I find the maker's mark?
Look on the back, the underside, inside and behind drawers, and under the top. Stamps, paper labels, brands, and patent numbers are the most useful, and a patent number can date a piece precisely.
Bring a piece to the pros — find antique dealers near you who can examine it in person.