El Salvador 1996 — 25 Colones Face Die Proof (Pick 149p), De La Rue, PMG 65 PPQ Gem New
Large-format face die proof prepared by De La Rue in 1996 for the forthcoming 25 Colones issue later released 1997–1999 (SCWPM Pick 149 and subsequent variant Pick 155). The engraving depicts the Pirámide de San Andrés archaeological complex—an emblem of national heritage—rendered in tight intaglio with wide proof margins and a blank reverse. Functionally, die proofs are the printer’s finalized master impressions taken directly from the face die to verify line integrity, color separation, and registration before plate duplication and production. ... Read more →