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| Issuer | Empire of Vietnam |
|---|---|
| Year | 1186-1201 |
| Type | Log in to see details |
| Value | Log in to see details |
| Currency | Log in to see details |
| Composition | Copper |
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| Diameter | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
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| Reverse description | Reverse is uniface and entirely plain, bearing no inscriptions, symbols, or decorative elements. The field is flat and featureless save for the central square perforation shared with the obverse, bounded by a raised inner square rim and an outer circular border. The surface displays heavy corrosion, encrustation, and patination typical of cast copper cash coins recovered from extended burial or circulation. |
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| Edge | Plain |
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| Additional information |
Thiên Tư Nguyên Bảo was issued under Lý Cao Tông, a reign defined almost immediately by instability — court factionalism, peasant rebellions, and the progressive erosion of Lý dynastic authority that would culminate in the dynasty's collapse two decades after this coin ceased production. Cao Tông's personal disengagement from governance, well documented in Vietnamese chronicles, left the currency system largely to bureaucratic inertia rather than deliberate monetary policy.
Barker 7.1 is among the less frequently encountered Lý cash types in reference collections outside Vietnam.