20 Dollars Niels Henrik David Bohr

Bohr's association with Liberia is nonexistent — this is a commemorative issue produced for the collector market, one of hundreds struck by the Liberian Central Bank during the early 2000s under licensing arrangements with private minting firms. The practice flooded the market with silver pieces honoring figures entirely unrelated to Liberian history, generating hard currency through collector demand rather than domestic circulation.

Bohr himself famously dissolved his Nobel gold medal in aqua regia during the Nazi occupation of Copenhagen in 1943 to prevent its seizure — the solution sat on a laboratory shelf unnoticed, and the gold was later re-precipitated and recast by the Nobel Foundation.