Luxembourg 1966 - 20 Francs Color Trial Specimen (Pick 54cts)
The obverse displays Grand Duke Jean in formal military attire, rendered in finely controlled intaglio and surrounded by complex multicolor guilloche structures. Unlike the issued format, this trial emphasizes a more experimental palette, allowing printers to evaluate contrast between portrait, denomination, and background security elements under varying lighting and handling conditions. The interplay of color layers demonstrates how visual hierarchy was refined before standardization. Read more →