Vierer - Leopold III or IV Meran

The ambiguity in attribution between Leopold III and Leopold IV reflects a genuine administrative overlap in Tyrolean governance during the Habsburg partition years following the Treaty of Neuberg in 1379, which divided Habsburg lands between the Albertine and Leopoldine lines. Tyrol fell to the Leopoldine branch, but co-administration and succession disputes make precise die-attribution difficult even now.

The vierer denomination itself was a distinctly regional unit, tied to the Merano mint's output during a period when Tyrol maintained meaningful monetary autonomy from broader Habsburg standardization efforts pushing through the Rhine corridor.