75 000 000 Roubles Transcaucasian Socialist Federal Soviet Republic

The Transcaucasian Socialist Federal Soviet Republic was itself a short-lived administrative construction — a federation of Armenia, Azerbaijan, and Georgia imposed in 1922 and dissolved in 1936 when the three were absorbed directly into the USSR as separate union republics. Its currency emissions were correspondingly brief and chaotic, overlapping with both the dying hyper-inflated roubles of the individual republics and the new Chervonets-backed Soviet rouble being stabilized in Moscow at the same time.

The 75,000,000 rouble denomination reflects where Soviet Transcaucasian inflation stood in 1923–24 — denominations in the tens of millions were routine before the 1924 monetary reform wiped the slate clean at a rate of 50,000 old roubles to one new gold-backed rouble.