KM#Pn73 is a pattern piece, not a circulation strike — Poland was actively negotiating the terms of its post-partition monetary system in the mid-1920s, and several gold denominations were proposed and struck as probes before the zloty's official gold standard parameters were finalized. A 46-gram gold 5-zloty piece was never adopted; the denomination eventually circulated in silver.
KM#Pn73 is a pattern piece, not a circulation strike — Poland was actively negotiating the terms of its post-partition monetary system in the mid-1920s, and several gold denominations were proposed and struck as probes before the zloty's official gold standard parameters were finalized. A 46-gram gold 5-zloty piece was never adopted; the denomination eventually circulated in silver.