Nanowerk8d
Single stamp printing method creates multiple patterns using programmable surface energy
A printing method using surface energy control allows a single stamp to create multiple patterns, simplifying electronics ...
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Precious US stamp from 1868 expected to sell for eye-popping sum: 'Rarest of the rare'
Issued by the U.S. Postal Service in 1868, the stamp depicts Benjamin Franklin's profile and was indented by a "Z-grill" pattern. The Benjamin Franklin Z-grill is one of the rarest and most sought ...
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Why a 1-Cent Postage Stamp Could Sell for $5 Million
A grill is a type of mark impressed into a postage stamp invented in 1867 to prevent reuse (the pattern's small indentions would have made it difficult for Americans at the timeto remove ...