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Real of 10 soldos - João I Big disk, Porto mint
| Uitgever | Portugal |
|---|---|
| Jaar | 1385-1397 |
| Type | Standard circulation coin |
| Waarde | Log in om details te zien |
| Valuta | Log in om details te zien |
| Samenstelling | Log in om details te zien |
| Gewicht | Log in om details te zien |
| Diameter | Log in om details te zien |
| Dikte | Log in om details te zien |
| Vorm | Log in om details te zien |
| Techniek | Log in om details te zien |
| Oriëntatie | Log in om details te zien |
| Graveur(s) | Log in om details te zien |
| In omloop tot | Log in om details te zien |
| Referentie(s) | Log in om details te zien |
| Beschrijving voorzijde | Central field displays the royal cipher 'IhnS' (monogram of João I) surmounted by a crown, with the Porto mint letter 'P' positioned below. The design is arranged within a quartered shield-like composition, with Portuguese quinas (escutcheons of five bezants) visible in the quadrants, all enclosed within a double linear inner circle. The outer legend, rendered in uncial Latin characters, runs between two concentric circles. Secret symbols may appear to either side of the crown depending on the die variety. |
|---|---|
| Schrift voorzijde | Log in om details te zien |
| Opschrift voorzijde | ADIVTORIVM NOSTRVN QVI FEC IT CELVM ET TERAN IhnS P (or ºPº ) |
| Beschrijving keerzijde | Log in om details te zien |
| Schrift keerzijde | Log in om details te zien |
| Opschrift keerzijde | Log in om details te zien |
| Rand | Log in om details te zien |
| Muntplaats | Log in om details te zien |
| Oplage | Log in om details te zien |
| Aanvullende informatie |
João I's claim to the throne was contested from the moment he was acclaimed king at Coimbra in April 1385, and the coinage issued from Porto in the years immediately following reflects the monetary chaos of a kingdom that had just fought off Castilian invasion at Aljubarrota. The Porto mint operated with considerable autonomy during this period, producing issues that diverged meaningfully from Lisbon output — the so-called "big disk" fabric being one such divergence, with a broader flan relative to die size that distinguishes Porto production from contemporaneous pieces.
Billon coinage of this reign is notoriously variable in silver content, a consequence of wartime treasury strain rather than deliberate debasement policy.