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| 正面描述 | 登录 以查看详情 |
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| 正面铭文 | 登录 以查看详情 |
| 背面描述 | Turquoise and multicolour polymer reverse centred on a large ghost watermark-style portrait of Thomas de la Rue overlaid with geometric guilloche underprint in blue, gold, and teal. A vertical serial number appears at left and a horizontal serial number at upper right, flanking the dominant numeral '1' and the italic 'f series' inscription. At lower right, a QR code is accompanied by the 'SAFEGUARD®' inscription and the De La Rue logotype; a transparent window at the left edge repeats the portrait motif seen on the obverse within diamond-patterned framing. |
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| 防伪类型 | 登录 以查看详情 |
| 防伪描述 | Transparent polymer window at the right edge of the obverse incorporating a secondary portrait within a diamond-patterned frame; SAFEGUARD® security thread visible on the reverse; QR code printed at lower right of the reverse for authentication purposes. |
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De La Rue produced polymer demonstration notes specifically to pitch their substrate and security technology to central bank clients — these are sales tools, not monetary instruments, and were never intended for public circulation. The transparent window and embedded thread exist here as proof-of-concept rather than operational security, and the QR code almost certainly links to De La Rue's own marketing infrastructure rather than any verification system.
Collector interest is niche but genuine. Printers' specimen and promotional material often surfaces through trade channels after contract negotiations conclude or product lines are discontinued.