Coin tiers: subunits and units divided by metal colour

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Tajikistan.

Dirham: brass-plated steel.  Somoni: nickel-brass.


Numista describes the somoni coins as nickel-brass.

To my eye, they look more like nickel or copper-nickel, however.

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Tonga, 2015 set.

Seniti: nickel-plated steel.  Pa'anga: aluminium-bronze.




Curiously, the 1 pa'anga coin also has a different obverse design.

It features a portrait of King George Tupou V.

The seniti coins feature King Tupou VI, monarch since 2012,.

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Chile set, 1971 / 1972.

Centesimos versus escudos.

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Bosnia and Herzegovina.

Fening versus mark.

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Argentina, 1985 to 1989.

Centavos and austral / australes.

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Kyrgyzstan.

1 som = 100 tyiyn.

The tyiyn coins are in brass-plated steel.

The som coins are in nickel-plated steel.

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Denmark, 2023.


The subunit coin (50 ore) is separated by colour from the whole unit coins.

And then the metal colours are also separated according to the number of denomination digits.

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Australia set.

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Peru, set of 1985 to 1988.

Notice how the denomination moves to the obverse on the inti coins.

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Russia, coins of 2014.

The 10 and 50 kopecks are made of brass-plated steel.

The ruble coins are made of nickel-plated steel.


The kopeck coins feature Saint George and the dragon.

The rubles show the double-headed eagle.