Original edition of this treaty on the manufacture of guns describing in detail the work of three Lisbon gunsmith brothers, of which only to sign the work under pseudonyms (acronyms), since at that time it was not usual to reveal the secrets of the profession. Complete and well preserved copy, slightly trimmed, checking exactly with the English fac-simile edition (although some sections and plates are differently placed) of the responsibility of the known collector and expert Rainer Daehnhardt with the collaboration of W. Keith Neal (London: Sotheby, 1974). Title-page with two minor repairs. Contemporary full limp vellum parchment binding.