75 Roubles

Belarus issued its first post-Soviet ruble series in 1992, backdated to 1991, as emergency transitional currency after the republic abandoned the Soviet ruble. The 75-ruble denomination is unusual — not a value that appears in standard decimal or power-of-five progressions, and its existence reflects ad hoc denomination planning during a period of rapid monetary improvisation rather than any coherent policy framework.

Pick lists this as P#A3, the "A" prefix indicating it was catalogued retroactively as a supplementary issue outside the main series sequence.