I have a very collectible German Military Luftwaffe pilot's flyback chronograph by Glashutte which I have owned since 1947 and details of which are as follows:
CASE: Large case with fluted bezel. The screwed back signed "Wasserschtz, Uhrenfabric AG Glashutte (Sa) and numbered 210676. Large pushers control the chronograph. Top pusher starts and stops the chronograph and the bottom pusher resets the counter to zero.
DIAL: Original black finish with Arabic numbers and matching luminous filled Mercedes hands. Registers for constant seconds (left) and 30 minutes (right). Outer 1/5 second graduation.
MOVEMENT: Original cal. UROFA 59, all parts original. Glashutte Urofa Tutima 15 Ligne, 21 jewel, Caliber 59 manual- winding chronograph movement with flyback feature. The chronograph bridge is stamped with the same number that is stamped on the case - 210676.
SIZE: 39mm (not counting crown), 48mm long (lug to lug), 1`w2mm thickness.
Is it possible to date the year of manufacture from the serial number and can anyone give me an approximate valuation?