100 Tögrög

Mongolia's 1966 series marked a significant redesign from the earlier Soviet-influenced issues, though the political alignment with Moscow remained obvious in the printing contract — this series was produced in the USSR, as were essentially all Mongolian banknotes of the period through the state printing enterprise. The long validity window, stretching into the early 1980s, reflects the minimal inflationary pressure in a centrally planned economy where note replacement was driven by wear, not monetary policy.

The watermark is the sole mechanical security feature, which was unremarkable for Soviet-bloc printwork of the era but left the notes relatively straightforward to counterfeit — a known concern the State Bank quietly acknowledged by the time the 1981 replacement series was commissioned.