United States ca. 1960s–70s – American Bank Note Company Test Note, 10 Units, Green Series of 1929 (With Watermark and Segmented Foil Security Thread, PMG 66 EPQ Gem Uncirculated)
This engraved test note by the American Bank Note Company (ABNCo) represents one of the firm’s most enduring demonstration designs, known as the 'Series of 1929' specimen. Although dated 1929, these were printed decades later—primarily in the 1960s and 1970s—as house proofs and sales samples showcasing engraving precision, watermark technology, and later innovations such as foil-thread anti-counterfeiting devices. The layout follows classic ABNCo symmetry: a central allegorical portrait of Liberty, derived from earlier U.S. ... Read more →