Antique Brass Finish on Zinc Alloy Coins and Tokens: Layers, Durability and Enamel
Why buyers ask
In October 2026 a US buyer planning a set of seven 51 × 38 mm tokens, about 2,100 pieces in total, asked us exactly what sits between the zinc alloy and the antique brass surface, whether the finish would survive being carried loose with coins and keys, and whether enamel could be filled on raised lettering and a hammered background. He had also been told by an AI assistant that an underplate is always required. These are fair questions for any antique-finish coin, so here is how the finish is actually built and what to specify.
How the finish is built
| Layer | Our standard process | Options to ask about |
|---|---|---|
| Base metal | Die-cast zinc alloy (brass and iron are other base metals; see the comparison guide) | Solid brass base for higher weight and a different feel, at higher cost |
| Plating | Brass-tone electroplating applied directly on the polished casting | Separate copper or nickel underplate, if your specification requires one |
| Antiquing | Darkened in the recesses, relieved on the high points for contrast | Lighter or darker antique tone, matched to a physical reference |
| Color | Soft enamel filled into recessed pools after plating | Hard enamel, or a clear epoxy dome over soft enamel |
| Top coat | None in the standard process | Clear protective layer for coins handled every day |
Whether you need an underplate or a top coat depends on use, not on a fixed rule. A coin kept in a display case or given as a keepsake does not need the same protection as a token carried in a pocket every day. If you have a durability expectation, write it down (for example, several days of tumbling with ordinary coins, skin oils and humidity without peeling) and ask the supplier which process meets it and what it adds to the unit price.
What normal wear looks like
- High points become brighter and the antique contrast shifts over months of handling. Many buyers like this.
- Fine scratches appear on flat areas, as on any metal coin.
- Not normal: peeling, flaking, blistering or large areas of grey zinc showing. That points to a plating problem and should be checked on the sample.
Enamel goes in recesses, not on raised lettering
Soft enamel is filled into recessed pools surrounded by a raised metal edge, after the antique plating is finished. Raised lettering and raised design elements stay in the plated metal finish. If an element must carry a color, draw it as a recessed area on the artwork. A hammered or textured background can be cast, but it works best as plain metal rather than as an enamel area, because enamel needs a pool to sit in.
Thickness, relief and small text
For a 51 × 38 mm token, 2.5–3.0 mm overall thickness is a common range. With relief on both faces, the raised areas on each side and the solid core share that thickness, so the deeper the relief, the thinner the core under it. Rather than fixing depths yourself, send the artwork with black for raised and white for recessed areas, and ask for production artwork that shows the proposed levels before the mold is made. Very small text on a textured background can lose definition; the production artwork review is where letter size and line width are checked.
Color approval
Antique plating varies naturally from piece to piece, and a screen rendering or AI concept image cannot show it exactly. If you have a coin with an antique tone you like, send it or a photo as the reference. Enamel colors are picked from a Pantone reference; expect them to read slightly differently on metal than on screen.
Ordering steps
- Send discussion artwork, size, thickness, quantity per design and delivery address for a first quote.
- Pay the one-time mold fee; we prepare production artwork for each design and send it for written approval.
- A physical sample is normally made in about 7 days; the antique tone, enamel colors and any protective layer are approved on it.
- Bulk production and delivery follow sample approval; timing is confirmed for the approved quantity and destination.
Frequently asked questions
Is an antique brass coin made of brass?
Usually not. Most antique brass challenge coins and tokens are die-cast zinc alloy with an electroplated brass-tone finish that is then antiqued (darkened in the recesses and relieved on the high points). Solid brass is a different, more expensive base metal.
Will an antique brass finish survive being carried in a pocket?
For normal pocket carry with coins and keys, expect gradual cosmetic wear: the high points get brighter and the antique contrast changes over time. Peeling or blistering is not normal wear. If the coins will be handled daily, ask for a clear protective layer as an option and compare samples.
Is there an underplate or clear coat under or over the antique finish?
It depends on the supplier's process. Our standard antique finish is plated directly on the zinc alloy without a separate copper or nickel underplate and without a clear top coat. A clear protective layer can be reviewed as an option for coins that will be handled heavily; it adds cost and changes the look slightly, so approve it on a sample.
Can soft enamel be filled on raised lettering or on a sloped surface?
No. Enamel is filled into recessed areas with a raised metal edge around them, after plating. Raised lettering stays plated metal. If an element must be colored, it has to be designed as a recessed pool on the artwork.
How do I approve the antique color?
Use a physical reference if you have one. Antique finishes vary naturally from piece to piece and from a screen rendering, so approve the tone on a physical sample, not on an image.
Get your coins or tokens quoted
Send the artwork, size and thickness, quantity per design, finish and how the coins will be used. Quote response within 24 hours.