London: Printed for the Autor [sic], 1725.
8vo, , lxxxiii, 180,  p. Early quarter calf, marbled boards, title-page mounted and partially cut away with no loss of text, first leaf soiled, spine splitting but cords holding. Large armorial bookplate of Sir Robert Throckmorton.
§ First and only edition, a scarce book of which only one copy has ever sold at auction (2019, Orskey £500, with 6 plates of music added). Fewer than a dozen copies recorded in libraries. La Fond proposed a new system for printing music using tones and half-tones of the octave designated by numbers 1-12. Item #123343