Fitted on an Oysterflex bracelet, features a dial in white mother-of-pearl with chronograph counters in black mother-of-pearl. The colour combination is reversed on the second watch, which has an Oyster bracelet and a black mother-of-pearl dial with white mother-of-pearl counters. The discs of material used for the dial and the counters are positioned to optimize the colour intensity of each variety of mother-of-pearl and further enhance the contrast between them. This design called for the creation of a specific and technically demanding manufacturing process.
