Cameroon – 2025 – 500 Francs – Benjamin Franklin “Z-GRILL” (The World’s Most Valuable Stamps series)
€ 72.95
In Stock / On Backorder
| Issuing Country | Cameroon |
| Year of Issue | 2025 |
| Face Value | 500 Francs |
| Metal | Silver |
| Fineness (purity) | 999/1000 |
| Weight | 17.5 gr |
| Diameter | 50 mm |
| Quality | PROOF |
| Mintage | 558 pcs |
| Scope of Delivery | Box Certificate |
| Special features | Colored |
Description
In 1868, the United States issued an experimental series of postage stamps
featuring the grill pattern — a grid of embossed cuts designed to prevent reuse.
The variant with horizontal impressions, known as the Z-Grill, has survived in only
two copies. One is held in the collections of the New York Public Library, while
the other sold at auction in 2024 for a record $4.3 million. This coin faithfully recreates
the appearance of the stamp, highlighting its distinctive pattern and exceptional place
in philatelic history.