Reference 6595. Case and bracelet in 750 yellow gold, mother of pearl dial, folding clasp in 750 white gold. D. housing 34 mm. Date, day of the week, month of the month, lunar calendar. Marked on the dial: BLANCPAIN, JB 1735, SWISS MADE. Marked on buckle and housing: BLANCPAIN NO. 50, SWISS MADE, JB 1735, assayer's mark, maker's mark (embossed).