20 Kreuzer

Frankfurt's 1763 coinage falls squarely in the shadow of the Seven Years' War, which had ended that same year with the Treaty of Hubertusburg. The Free City had spent the war years under French occupation — French troops held Frankfurt from 1759 to 1763 — leaving municipal finances strained and the local money supply disrupted. This issue was part of the recovery coinage that followed.

KM#225 is a single-year type for this denomination, with no continuation into subsequent years, which likely reflects the ad hoc nature of post-occupation fiscal stabilization rather than any planned series.