Unpolished solid stainless steel case with early waterproofing design. The case back houses the movement and crystal as a single assembly that pushes up into the case from below. The crown uses a split stem to detach for service. The case is signed on the back, Octo Watch Co, Reserved, Swiss and Brevet + 217284 which is likely the patent number of the press through case.
Beautiful dial design, with white boarder and red ring containing aged creamy luminous roman numerals. The fancy hour hand is very unique. There is an outer minutes/seconds track. The dial is Signed Octo, Swiss.
Swiss Made, seventeen jewel, manual wind movement is signed Octo. The balance is stamped with the Octo Swiss export Code QOG.
Military / Midsize / Unisex – 30.75mm Diameter Excluding Crown x 38.5mm Top to Bottom. 16mm Lug Spacing.