Patek Philippe Quartz

European Watch Clock and Jewellery Fair 1978 BF 316
This ultra-slim and stylish Patek Philippe model features the world’s thinnest quartz analogue movement (2.50 mm thin). Water-resistant case and bracelet in 18K gold, Roman numerals on the dial. An interesting technical feature is that the minute hand moves in 5-second jumps to conserve battery power. (PATEK PHILIPPE Quartz)