PATEK PHILIPPE NAUTILUS REF. 3900/1, 80S Two body brushed and polished stainless steel case, n. 1815527. Nautilus steel bracelet with deployant clasp.? Anthracite dial with horizontally ribbed decoration, signed, Swiss indication flanked by "Goute à prior”, applied baton indexes, minute/second division, aperture for the date. Luminous white gold baton hands, centered seconds.? Signed quartz movement, rhodium-plated with Calatrava pattern caliber?E23-SC, n. 1550638, 7 jewels. Diameter ?: 32 mm Note: working. tags: orologio, watch