10 Francs - Léopold II Pattern

Pattern coinage for Leopold II's reign was struck in anticipation of his accession, which came in December 1865 upon the death of his father Leopold I. The precise window of 1865–1867 reflects both pre-accession preparation and the slow administrative confirmation of adopted types before regular issue production could begin at the Brussels mint.

The Moreaux catalogue's absence of a listing — noted in the reference data — places this squarely among pieces that circulated only within official and collector channels, never reaching commerce.