ROLEX REF. 2508, CHRONOGRAPH, MINUTE COUNTER BLACK LACQUERED DIAL SO-CALLED "DUCO" WITH ARCHIMEDEAN SPIRAL SCALE; 18K YELLOW GOLD | Important Modern & Vintage Timepieces | Monaco Auction
ROLEXREF. 2508, CHRONOGRAPH, MINUTE COUNTER BLACK LACQUERED DIAL SO-CALLED "DUCO" WITH ARCHIMEDEAN SPIRAL SCALE; 18K YELLOW GOLD, Very fine and extremely rare and well preserved, 18K yellow gold, manual-winding, "tonneau"-shaped, large gentleman’s wristwatch, snap-on case-back, black colour lacquered dial, so-called "Duco", with subsidiary seconds at 9, chronograph with telemetric scale graduated on the dial for one kilometre and tachometric scale graduated in an Archimedean spiral for 400 units, and 30-minute counter.
