This is a service guide and instruction manual for the Corum Bubble Automatic Chronograph, which came with the watch. The service guide lists Corum service centers worldwide. The Japanese service center listed is from the First Showa era. ＜Service Guide＞ Size: 11cm (H) x 11cm (W) Cover Color: Dark Blue Language: English Condition: Clean ＜Instruction Manual＞ Folded Size: 8.7cm (H) x 5.5cm (W) Color: White Languages: English, French Condition: Some discoloration and stains around the folds, and some scratches are visible when held up to the light. ※Please excuse any slight errors in the measurements. ※The color may appear slightly different from the actual product depending on the environment of your device. Thank you for your understanding. Corum bubble automatic chronograph instruction book Corum manual Corum papers