Catalog
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| Issuer | National Reserve Bank of Tonga |
|---|---|
| Year | 2023 |
| Type | Log in to see details |
| Value | Log in to see details |
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| Composition | Log in to see details |
| Size | Log in to see details |
| Shape | Rectangular |
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| Obverse description | Predominantly blue on a multicolour underprint. A central vignette of King Tupou VI faces to the right within a decorative medallion, flanked by the Tongan coat of arms. Bilingual inscriptions in English and Tongan appear above and below, with the denomination stated in numerals and text. |
|---|---|
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| Protection description | Transparent polymer window integrated into the substrate; simulated security thread printed on reverse as a visual security element. |
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| Comments |
Tonga's switch to polymer for this denomination follows a broader Pacific trend — the Reserve Bank made the transition partly in response to the islands' humid climate, which degrades cotton-fibre notes unusually fast given low circulation velocity in outer island communities. De La Rue's polymer substrate here carries a simulated security thread, a visual mimicry of the metallic windowed threads used on higher-security issues rather than an actual embedded feature — a cost-driven compromise that collectors and counterfeiters alike have noted.
TBB#227 is recent enough that secondary market data remains thin.