20 Dollars Montgolfière

The Montgolfière balloon — the design subject here — made its first untethered human flight on November 21, 1783, carrying Pilâtre de Rozier and the Marquis d'Arlandes over Paris for roughly 25 minutes. Liberia has issued commemorative silver in this format extensively since the 1990s, contracting production through European and Asian minting houses targeting the collector market rather than any domestic circulation need.