41mm (not counting the crown) MARATHON TSAR MILITARY- NUMBER 0003 OF THE NOV. 2005 CONTRACT. I got this from one of the former product directors of Marathon and Stocker & Yale. High torque swiss quartz movement- government approved. Comes mint and unworn in double boxes with operations paper. Runs great. Highly desirable EARLY 0003 LOW SERIAL NUMBER OF THE RUN. SELLING FOR $100.00 LESS THAN THE POSTED PRICE ON THE AUCTION SITE. $495.00 PLUS SHIPPING.- DAVE HOLMES