Johannes Hartmann Berlin 18k yellow gold to wristwatch rebuild half-hunter pocket watch, Switzerland around 1890, manual winding, full-engraved 3-cover-gold hinge case, translucent enamelled numerics rim with blue Roman numerals, cuvette signed 'Johs. Hartmann, Koenig-Hof-Uhrmacher Berlin', enamel dial with Roman numerals, hands later, gold plated bar-construction-movement, wolfs tooth winding, compensation-balance with Breguet- hairspring, diameter approx. 32 mm, overhaul recommended at buyer's expense, condition 2-3