USA. The common financial crisis term "Black Friday" finds its origin with the 1869-S Double Eagle.
Two speculators (J. Gould and J. Fisk) tried to manipulate the gold market by convincing the gouvernment to keep the gold price artificially high. On Friday Sept.24th President Grant realised that it was speculation and released massive gold (mainly in Double Eagles). This drasticaly lowered gold price and ruined speculators.
Quite easy to find in AU it remains a piece of history.
An interesting item for connoisseurs.
Gold. 34 mm. 33.44 gr. (900‰).