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| 裏面の説明 | The abbreviated legend SUBQ SIGN. NATA STAB. runs along the periphery, a contraction of the full motto SUBQUO SIGNO NATA STABILI (Under this sign it was born and will remain). At center, the Portuguese royal coat of arms, featuring the traditional quinas shield, is superimposed upon an armillary sphere, the latter serving as a dynastic symbol of Portuguese maritime heritage and sovereignty over Brazil. The heraldic design is rendered with fine engraving detail consistent with early 19th-century colonial minting standards. |
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| 縁 | Reeded |
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| 追加情報 |
The half-pataca denominations issued under João VI reflect an awkward transitional moment in Brazilian monetary administration. João had fled Lisbon with the entire Portuguese court in 1807 ahead of Napoleon's invasion, and by 1818 — the year he formally proclaimed the Kingdom of Brazil — the Rio mint was under sustained pressure to produce coinage adequate for an economy that was expanding faster than its monetary infrastructure. The 160 réis filled a practical gap in everyday transactional exchange that larger silver denominations could not serve.
KM#323 spans a four-year window ending with João's reluctant return to Lisbon in 1821, forced by the Liberal Revolution in Portugal.