Approx. Ø55mm, grey lacquered original case, side marking FL23883 and red stamp BAL 038, bottom with mil. Marking as B-clock No. 5378, Stowa precision anchor with Geneva stripes and fine regulation, also No.5378, central second, air-leather bracelet, almost as good as new, probably new-old-stock with only the smallest bearing traces, extremely rare in this condition.