Norbu Tsoki Mint, Yatung, Tibet, China

(en) Because most of the copper for the coinage came from India, and because fuel was scarce in Lhasa, the Tibetan Govemment decided, in 1923, to set up a branch mint in the Chumbi Valley, on the route from India. Trees were plentiful here for use as fuel, and it was decided that this branch mint would only produce copper blanks, to be struck into coins in one or other of the three mints in Lhasa. Copper blanks were produced here, using an enormous hand-operated lever stamp, until the end of 1928, when the official in charge fled to India after being accused of adding to his income by producing finished coins as well as copper blanks. The closure of the mint was intended to be temporary, but it was never used again and in December 1942, the machinery was finally transported to Lhasa and the building was put to another use.

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Sources:
• Fred Kempf; 1969. “A Primary Report on Native Tibetan Coins”. Seattle, Washington, United States.
• Nicholas G. Rhodes; 1978. "Tibetan Mints". Oriental Numismatic Society Information Sheet, number 19, Prestwood, United Kingdom.