Rotonde de Cartier watch, Large Date, Retrograde Second Time Zone and Day Night Indicator

Rotonde de Cartier watch, 42 mm, Second Time Zone Day/Night, Manufacture self-winding mechanical movement, calibre 1904-FU MC. Case in 18K rose gold, diameter: 42 mm, thickness: 11.96 mm, fluted crown decorated with a cabochon sapphire, silvered guilloché dial with large date at 12 o'clock, apple-shaped hands in blued steel, sapphire crystal, brown alligator-skin strap, 18 mm double adjustable folding buckle in 18K rose gold, retrograde second time zone at 10 o'clock, day/night indicator at half past three, small seconds at 6 o'clock, sapphire case back, water-resistant to 30 metres.