Kremnica has struck trial pieces ahead of circulating issues as a matter of standard proofing practice, but copper trials for bimetallic or steel-composition circulating coins occasionally escape documentation entirely — attribution often rests on provenance rather than official mint records. The 2 Koruny circulating type was itself a late-era piece, struck in the final years before Slovakia's monetary preparations for euro adoption began redirecting mint priorities away from the koruna series entirely.
Kremnica has struck trial pieces ahead of circulating issues as a matter of standard proofing practice, but copper trials for bimetallic or steel-composition circulating coins occasionally escape documentation entirely — attribution often rests on provenance rather than official mint records. The 2 Koruny circulating type was itself a late-era piece, struck in the final years before Slovakia's monetary preparations for euro adoption began redirecting mint priorities away from the koruna series entirely.