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| 正面描述 | 登录 以查看详情 |
|---|---|
| 正面铭文 | 登录 以查看详情 |
| 背面描述 | 登录 以查看详情 |
| 背面铭文 | 登录 以查看详情 |
| 签名 | 登录 以查看详情 |
| 防伪类型 | Watermark, Security thread |
| 防伪描述 | the Quetzal bird, visible when the note is held to light; embedded security thread running vertically through the note. |
| 变体 | 登录 以查看详情 |
| 备注 |
The Banco de Guatemala series printed by Oberthur in Rennes ran through the 1990s as the bank consolidated printing contracts away from British suppliers it had used in earlier decades. Oberthur's intaglio work on this denomination is competent but unremarkable by the firm's standards — the real engineering interest lies in the embedded security thread, which Guatemala adopted relatively early among Central American issuers as counterfeiting pressure on the quetzal increased through the late 1980s.
Pick 81 was eventually superseded by polymer issues as the region moved away from cotton substrates entirely.