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1/2 Real of 10 Soldos - João I P/PO, Porto mint
| Issuer | Portugal |
|---|---|
| Year | 1392-1397 |
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| Composition | Log in to see details |
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| Shape | Round (irregular) |
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| Reverse description | Central field displays the Portuguese royal shield of arms, featuring the characteristic quinas (five escutcheons) arranged in a cross pattern, flanked on either side by the Porto mint letters P and O in the field. The shield is rendered in the heraldic style typical of the Avis dynasty coinage. A circular beaded border frames the design, with the peripheral legend in uncial Latin script running around the rim. The overall strike reflects the hammered technique and irregular flan characteristic of late 14th-century Portuguese issues. |
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| Reverse lettering | + IhnS : DEI : GRA : REX : POR P - O |
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| Additional information |
João I came to power through the 1383–85 crisis — a succession war against Castile that ended at Aljubarrota and left Portugal scrambling to rebuild a monetary system badly disrupted by wartime debasement. The fractional billon issues that followed, including this Porto-struck piece, were part of a broader effort to restore small-denomination circulation after years of currency chaos.
The Porto mint's output for João I is considerably scarcer than Lisbon's in surviving collections, a reflection of the capital's dominance in royal minting operations rather than any documented production shortfall.