Catalog
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| Issuer | Thailand |
|---|---|
| Year | 1862 |
| Type | Log in to see details |
| Value | Log in to see details |
| Currency | Log in to see details |
| Composition | Log in to see details |
| Weight | Log in to see details |
| Diameter | Log in to see details |
| Thickness | Log in to see details |
| Shape | Log in to see details |
| Technique | Milled |
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| In circulation to | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Thai/Chinese/Latin |
| Obverse lettering | Log in to see details |
| Reverse description | Log in to see details |
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| Edge | Plain |
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| Mintage | Log in to see details |
| Additional information |
Rama IV — Mongkut — commissioned Western-style machine-struck coinage in the early 1860s as part of a deliberate effort to modernize Siam's monetary system and signal parity with European trading partners pressing hard on the kingdom's borders. This copper piece is a pattern, meaning it never entered circulation; it was produced to test designs and gauge foreign and domestic reaction before committing to a full issue. The Royal Mint in London and the Birmingham firm of Ralph Heaton & Sons were both involved in producing Siamese pattern coinage during this period, and attribution between them is not always clean.