One of the questions we get asked most often at Ca l'Antic is how to tell a genuinely antique brass piece apart from a modern reproduction, or from an object simply coated with a gold-toned finish. The good news is that you don't need to be an expert: with six simple tests, most of them using nothing more than your five senses, you can already rule out most fakes.
1. The weight in your hand
Solid brass is a relatively heavy metal for its size. If a piece that looks like brass feels surprisingly light, it's probably not solid: many modern decorative objects are made of plastic or a lighter metal with a brass-coloured coating or paint on top.
2. The magnet test
Brass is an alloy of copper and zinc, and neither metal is magnetic. If you bring a magnet close to the piece and it sticks, what you're holding is a steel or iron base with a brass-coloured finish or plating, not real brass.
3. The sound when tapped
Give the piece a gentle tap with a hard object, in a spot that isn't very visible. Solid brass tends to produce a clear, resonant sound, like a small bell, while hollow, plastic or coated pieces usually sound duller and flatter.
4. The scratch test
In a hidden spot (the base, the back), make a small, discreet scratch. If the same yellowish tone appears beneath the surface, it's solid brass. If a silvery or copper colour appears instead, it means there's only a layer of brass over another metal.
5. Patina: the most revealing test
Over the years, brass naturally develops a dark patina, in brown or greenish tones, which is never perfectly even: it builds up more in corners and crevices and fades in the areas that have been touched and handled most often — edges, handles, knobs. A patina that's too regular and even across the whole piece is usually a sign of an "artificial" patina, applied on purpose to fake age.
6. Manufacturing marks and real wear
Look closely for small imperfections: hammer marks, the rough texture typical of sand-cast pieces made by hand, visible solder joints, or screws with hand-cut threads. Genuinely antique pieces also tend to show logical wear exactly where they've been held or handled for decades — handles, knobs, corners — and sometimes carry the maker's name, a patent number or the country of origin engraved on them, which can help date the piece.
Still not sure?
None of these tests is foolproof on its own, but combining two or three of them (the magnet, the weight and the patina, for example) already rules out most imitations. And if, after looking closely, you're still unsure, you can always send us some photos: at Ca l'Antic we check every piece before putting it up for sale, precisely because we know it isn't always easy to tell just by looking.
You can see the brass and copper pieces we currently have available in the Ca l'Antic catalogue.
References
Appraisily. (n.d.). Antique brass identification guide. Appraisily. https://appraisily.com/how-to-identify-antique-brass/
Frelan Hardware. (n.d.). How to identify genuine antique brass hardware? [Blog post]. Frelan Hardware Blog. https://blog.frelanhardware.co.uk/how-to/how-to-identify-genuine-antique-brass-hardware