Sikkim, Silver Coronation Medal (Ser-thri Nga-sol Medal), 25.53g, instituted by Chogyal Chempo Palden Thondup Namgyal to commemorate his Coronation on 4th April 1965, Obv: State coat of arms of the Sikkim state in the centre, legend around "PALDEN THONDUP NAMGYAL" and date below 4 APRIL 1965, Rev: Mountains surrounded by legend in Tibetan script. With suspender. Extremely fine, rare.
Palden Thondup Namgyal was the 12th and last Chogyal (King) of Sikkim. In 1975 Sikkim joined the union of India through a referendum receiving a 97% majority election vote, thus ending his rule.