Luxembourg ND (ca. 1965) — 20 Francs (Back Photographic Proof, Unlisted)
Back-side photographic proof for the same unissued 20 Francs project, mounted on archive card and annotated in pencil. Rendered entirely in grayscale, it isolates the compositional logic of the design—vignette, numerals, and inscriptions tested for spacing and tone before translation to metal plates. PCGS 63 Apparent (Mounted). ... Read more →