2025 World's Most Expensive Stamps - Benjamin Franklin Z-Grill Silver Proof Coin hide-notify-me this high relief coin is

this high relief coin is a remarkable tribute to the lunar snake and represents the very best in minting excellence and design

Launched in December 1940

The design also incorporates The Perth Mint’s traditional ‘P’ mintmark

On both the reverse and obverse

this coin is more than a keepsake—it’s a legacy piece

2025 World's Most Expensive Stamps - Benjamin Franklin Z-Grill Silver Proof Coin hide-notify-me this high relief coin isIn 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