Dual plating applies two different metal finishes to a single coin, most commonly gold and silver, so that separate elements of the design read as distinct from one another.
It is a masking process. One plating is applied across the coin, then areas are masked off and a second plating is applied to the exposed parts. The result is two genuine metal finishes on one piece rather than a printed or painted imitation of one.
What it achieves: a central device can sit in gold against a silver field, lettering can separate from the background without using enamel, and a crest can be lifted out of a busy surround. On a coin with little or no colour, dual plating is often what gives the design its structure.
Where it works best:
- Designs with a clear focal element, such as a crest, an eagle or a central emblem
- Monochrome coins, where the two tones do the work colour would otherwise do
- Presentation pieces, where the extra depth justifies the cost
Dual plating costs more than a single finish, because it adds masking and a second plating run. On a busy, highly coloured design the effect can be lost, so it earns its cost on simpler coins rather than complex ones.
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