Hard enamel pins are created by pouring enamel several times in the recessed areas of the metal and is heated at very high temperatures. It is then polished smooth to ensure that the enamel is at the same level as the metal edges.
Bhutanese currency 25 Chhertum was introduced during the reign of Druk Gyalpo (King) Jigme Singye Wangchuck (1955–; r. 1972–2006), the 1st and 2nd version of the coin was issued between 1974 to 1979 by the Royal Government of Bhutan. The 3rd version in 2003 by the Royal Monetary Authority of Bhutan.
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