Coresa by Chronographe Suisse – A gentleman’s Swiss 18ct gold chronograph wristwatch

c1950, the signed cream coloured dial, 35mm diameter, with gold coloured alternate batons and Arabic numerals and gold coloured hands, subsidiary running seconds at 9 o’clock, and minute counter at 3 o’clock, sweep chronograph seconds, with inner dot minute track and outer timing and tachymeter tracks, unsigned and unnumbered 17 jewel crown wind mechanical movement under a base metal dust cover numbered 150, calibre 51, with start and stop/reset pushers above and below the crown, case, 38mm diameter, verso snap on with Swiss marks for 18ct gold in addition to Poinçon de Maître, Hammer Head, number 158 for Jean Arnoux, to an aftermarket brown leather strap with pin buckle