UNITED STATES – Boggs, Winthrop S.: Early American Perforating Machines and Perforations 1857–1867 (1954), 32 pages, softcover, signed by the author; PLUS: Baxter, James H.: Printing Postage Stamps by Line Engraving (1939), 164 pages, No. 529 of the 550 copies printed; hardcover; PLUS: Griffiths, William H.: The Story of American Bank Note Company (1958), 92 + 16 pages with engraved vignettes inside, hardcover, not a common book! Estimate: 100 Euro
