Patek Philippe 866/10

Patek Philippe. A Unique and Very Fine 18K Gold Openface Keyless Lever Pocket Watch with Enamel Miniature after Jacques Louis David by Suzanne Rohr, With Original Certificate of Origin Signed Patek Philippe, Genève, Ref. 866/10, Movement No. 931'909, Case No. 433'546, Manufactured in 1971 Cal. 17-170 nickel-finished lever movement stamped twice with the Geneva seal, 18 jewels, white dial, Roman numerals, outer minute track, subsidiary seconds, plain circular case, snap on back decorated with polychrome painted enamel miniature portrait depicting Alexandre Lenoir and marked J. Louis David , signed and dated S. Rohr 1971 , case, dial and movement signed, case and movement numbered 47mm diam.