Glashütte Senator Perpetual Calendar

I'm selling a mint condition Senator Perpetual Calendar that was purchased 9/2012. The watch is in excellent shape, the only visible wear is on the lock of the bracelet. Detail information as follows: Reference: 100-02-13-02-04 Movement: mechanical with automatic winding; Glashutte Original Caliber 39-50; 48 jewels; 28,800 a/h; power reserve approx. 40 hours; 21 karat gold winding mass. Functions: hours, minutes, sweep seconds; perpetual calendar (panorama date, day, month, moon phase, leap year indication). Case: steel; 39.3 x 12.8 mm (excl. lugs & crown); sapphire crystal; steel crown; case back secured by 5 screws, with sapphire exhibition window. Water-resistant to 50 meters. Dial: silvered; applied polished baton markers; polished Dauphine hands. Indications: month window at 2; panorama date at 4; moon phase at 8; day window at 10; leap year indication at 12. Strap: G.O. black leather; matching steel deployant clasp. Any questions are welcome.