Patek Philippe 866/26

Patek Philippe. A very fine and unique 18K gold openface keyless lever watch with enamel miniature after F. Ribeira by Mrs Mercier, original certificate, sales tag, archival image, product literature and box Signed Patek Philippe, Genève, ref. 866/26, movement no. 932'253, case no. 433'568, manufactured in 1974 Cal. 17'''170 nickel-finished lever movement stamped twice with the Geneva seal, 18 jewels, silvered matte dial, Roman numerals, subsidiary seconds, circular case, snap on back decorated with polychrome painted enamel miniature depicting "Retour du Verger" (return from the orchard) after F. Ribeira, signed Mercier , case, dial and movement signed 47 mm. diam.