RARE B-Uhr FL 23883 Military Observation Watch with original strap. Fully working in excellent condition. We have complete videos of working inside mechanism, get in touch with us to request it (not possible to upload videos with listing's photographs). The B-Uhren watches guided Luftwaffe German bombers in their campaigns of World War II. The B-Uhr remains a formidable watch. Each one used a Breguet balance spring. Inside, the movement was surrounded by an iron core, making the B-Uhr anti-magnetic and the oversized onion crown could be operated with gloves on the hand, a must for aviation. Beobachtungsuhr Bauart Laco-Durowe Movement: signed Laco-Durowe (22 Steine) Case: Wempe Serial number of the movement: 5863 Case number: 5863 Crystal: original (Acrylic) Band Type: original genuine leather strap Black dial with luminous Arabic numerals is in original condition, needles are slightly restored. Case has minor normal traces of use, some scratches on metal case around the crown and on opposite side under number FL23883 stamped. Mechanical hand winding movement is in very good working order, fully checked and working. DIMENSIONS: Diameter without crown: 55 mm Diameter with crown: 61 mm Lug to lug width (lenght): 66 mm Thickness: 18 mm Lug width (strap): 27 mm SHIPPING COSTS INCLUDES INSURANCE CALCULATED ON THE ITEM'S VALUE. All our items are shipped with expedited and insured couriers, providing full tracking until delivery. Photographs in the listing are an integral part of the description of the state of conservation. Upon request we are always available to provide further details and information on the works we offer for sale. #CollectableWatchesandPens