Patek Philippe 866/73

Patek Philippe. A Fine and Unique 18k Gold Openface Keyless Lever Watch with Enamel Miniature by Mrs. Mercier Signed Patek Philippe, Geneve, Ref. 866/73, Movement No. 932'671, Case No. 433'688, Manufactured in 1976 Cal. 17-170 mechanical movement double stamped with the Geneva Seal, 18 jewels, white matte dial, Roman numerals, subsidiary seconds, circular case, snap on back with polychrome enamel miniature depicting Venus and Bacchus, case, dial and movement signed 47mm diam.