International Watch Co., a gentleman's titanium Porsche Design automatic chronograph calendar wristwatch, Model: Titan, circa 1990,

细节
International Watch Co., a gentleman's titanium Porsche Design automatic chronograph calendar wristwatch, Model: Titan, circa 1990,
black dial signed IWC, International Watch Co., Schaffhausen, day/date aperture, subsidiary constant seconds, minute and hour recording dials, outer tachymetric scale, case with screw back, integral bracelet inscribed Titan, Porsche Design, deployant clasp, diameter 42mm.
See Illustration