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Tostão 'P-O' - Sebastião I 2nd type, Porto mint
| Issuer | Portugal |
|---|---|
| Year | 1570-1578 |
| Type | Standard circulation coin |
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| Composition | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
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| Obverse lettering | + SEBASTIANVS : I : REX : PORTVG : ET:AL P-O |
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| Edge | Plain |
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| Additional information |
Sebastião I assumed the Portuguese throne as a minor in 1557, and his coinage reflects the administrative pressures of a regency government managing an empire stretched from Brazil to the Moluccas. The Porto mint — distinguished here by the P-O mark — operated under periodic royal scrutiny during these years as the crown struggled to enforce consistent fineness standards across its domestic mints.
Sebastião's reign ended catastrophically at Alcácer Quibir in 1578, where he died without an heir, triggering the succession crisis that eventually handed Portugal to Philip II of Spain in 1580. Coins of his later type, struck right up to that final year, carry the weight of an entire dynasty's extinction.