(Luftwaffe Beobachtungsuhr). A rare Lufwaffe navigator’s watch in top condition, constructed of a matte grey painted non-magnetic metal casing, featuring a circular black face with numerals graded in intervals of five from from 0 to 60, in turn notched at second intervals of five, with large second and minute hands and a small hour hand, all of the aforementioned featuring fully-intact and functional luminous paint for clear nighttime use, the right side of the case with a functional wind-up dial, the face retaining an intact plexiglass composite crystal, with an integral loop emanating from both the top and bottom and retaining a fully-intact, original brown leather strap fastening with a functional magnetic metal buckle, the left side of the case stamped with a model number of “FL23883”, the reverse stamped with a serial number “H2417”, the case, measuring 55 mm in overall diameter (not inclusive of dial), accompanied by its period original case of issue, constructed of two pieces of card stock the lid bearing a fully-intact manufacturer’s label reading “LACHER & CO. UHREN & GEHÄUSEFABRIK, PFORZHEIM” for the firm operating under the moniker of “Laco”, one of the five confirmed manufacturers of field-quality Luftwaffe watches and chronographs, the case measuring 160 mm (w) x 80 mm (l) x 40 mm (h), the crystal demonstrates minimal scratching consistent with age and field use and the functionality of the watch has not been determined and should be inspected by a qualified watch specialist, an unworn example, in near mint fine condition.