Essai pieces struck by the Monnaie de Paris for Monaco were produced in extremely limited numbers — typically no more than 500 examples — as official trial strikes submitted for approval rather than public circulation. This 1974 gold essai was never adopted for a circulating issue; Monaco's monetary agreement with France meant that French franc coinage remained the practical currency of the principality, and large-denomination Monégasque gold pieces functioned almost entirely as collector and presentation items. The Gadoury reference MC156 confirms its status within the established essai sequence for Rainier III's reign.
Essai pieces struck by the Monnaie de Paris for Monaco were produced in extremely limited numbers — typically no more than 500 examples — as official trial strikes submitted for approval rather than public circulation. This 1974 gold essai was never adopted for a circulating issue; Monaco's monetary agreement with France meant that French franc coinage remained the practical currency of the principality, and large-denomination Monégasque gold pieces functioned almost entirely as collector and presentation items. The Gadoury reference MC156 confirms its status within the established essai sequence for Rainier III's reign.