Due to high demands for copper and zinc during the war effort, the use of Tombac was suspended.

Iranian Original Tombac is a global known brand and is imported by many countries.

Apparently, there is a variation of the medal, being stuck in silver as opposed to tombac, but this has not yet been verified.

The composition of tombac was .880 copper and .120 zinc.

The medal was made of tombac and its shape was roughly quadrangular (22,5 x 23,5 mm).

Originally this was done to distinguish the copper-colored tombac (copper-zinc alloy) coins, from pennies.

Rich low brass (Tombac) is 15% zinc.

It was a 34 mm in diameter circular medal struck from tombac and then silver plated and oxidised.

Skills and Hard Work, Success of the Five-Year Plan, date 1974; tombac, 65 millimeters.

The medal was secured to a gilt tombac 24,5mm wide x 16mm high rectangular mount by a ring through the suspension loop.

During World War II Canada minted nickels in tombac in 1942 and 1943.

In 1942, as a wartime measure, nickel was replaced by tombac in the 5 coin, which was changed in shape from round to dodecagonal.

The Decembrists, dated 1975, commemorating the 150th anniversary of the 1825 attempt to overthrow the czar; aluminum and tombac, 65 millimeters.

(Tombac 1943-1944) (Steel 1944-1945)

During World War II, the demand for nickel for the war effort was great enough for the 5 coin to be issued in tombac instead.

Tombac, as it is spelled in French, or Tombak, is a brass alloy with high copper content and 5-20% zinc content.

The version worn by the Prussian Gardes du Corps was of tombac (copper and zinc alloy) with silver mountings.

Due to the shortages of nickel, owing its use for munitions, the Royal Canadian Mint adopted tombac, a type of brass for the five-cent piece.

The church also contains a chalice made of brass and tombac donated by Plečnik, and a silver chalice donated by Vovk.

The Decembrists, dated 1989, struck 10 years after Shagin's departure from the Leningrad Mint for an exhibit in Leningrad and Moscow, tombac, 65 millimeters.

In the latter part of 1942 and throughout 1943, the coins were minted in tombac, an 88% copper-12% zinc alloy that got its name originally from the Indonesian/Javanese word for brass or copper.

AA Blagonravov, dated 1987, commemorating the 50th anniversary of the Academy of Industrial Machinery, two different reverses (large numeral 50, or industrial gears and atoms); tombac, 65 millimeters.

Although the Indian tabla have been long-known for density/diversity of sound, Keyvan's Heartbeat of the Orient album features tracks demonstrating the comparability of the Persian tombac to the Indian tabla.

Tombac was removed from the nickel in 1944 (to be replaced by steel, as noted during the Korean war) but the coins in Tombac, steel, or 99.9% nickel all remained twelve-sided until 1963.