Union Glashütte Tradition Pilot's Chronograph Automatic Watch, 38.5 mm (measured without crown), featuring the Glashütte Original Manufacture Caliber 26-31. Reference number: 2631-07-47-10 Year of manufacture: approx. 1998 In very nice condition with only slight signs of wear and minor scratches. It comes on the original Union Glashütte steel bracelet, which is a good length, fitting a wrist circumference of up to approximately 20.5 cm. It is equipped with the Caliber 26-31, which was built as a manufacture caliber by Glashütte Original. Unfortunately, these watches were only produced for a short time before the Swatch Group took over the brand and subsequently switched to the more affordable ETA movements. This is a great opportunity to acquire one of the old Union watches with this beautiful caliber in pristine collector’s condition. The 26-31 is based on the Glashütte Caliber 10-30 or 39. In our test on the time scale, the watch ran very well at approximately +3 seconds per day with an amplitude of 295 degrees. All functions are flawless; the chronograph resets cleanly, and the reset mechanism works perfectly. Delivery is in a neutral box. All watches are held in our inventory; therefore, we ask that you contact us in advance if you wish to view them. You will, of course, receive a proper invoice for your watch.