GLASHüTTE ORIGINAL astronomical gents wristwatch model Senator perpetual calendar, self winding, reference 3950142204, stainless steel case including original bracelet with butterfly buckle, additional 2 original leather straps with original deployant clasps, on both sides sapphire glazed, case back 5- times screwed down, display of hours, minutes, sweep seconds, big date & perpetual calendar (day, month, leap year & moon phase), correction at the sides in case inserted, fine finished movement, calibre GUB 39, skeletonized rotor with oscillating mass in 21k gold, 48 jewels, swan′s neck regulateur, diameter approx. 39 mm, length approx. 21 cm, original wooden box, setting pin & papers, sold in July 2007, condition 2, property of a collector