1 000 000 Karbovantsiv

Ukraine's hyperinflation in the early 1990s was among the most severe of any post-Soviet state — the karbovanets lost value so rapidly that denominations climbed from single digits to seven figures within a few years. This one-million unit note is effectively the endpoint of that collapse; the karbovanets was withdrawn entirely in September 1996 and replaced by the hryvnia at a rate of 100,000 karbovantsiv to one hryvnia, rendering notes of this denomination almost immediately obsolete.

The Canadian Bank Note Company contract is worth noting — Ottawa's involvement in producing currency for newly independent post-Soviet states was not uncommon in this period, as domestic printing infrastructure was either nonexistent or insufficiently secure.