IWC 18k yellow gold wristwatch, Switzerland/USA around 1926, manual winding,...

IWC 18k yellow gold wristwatch, Switzerland/USA around 1926, manual winding, unsigned-case, hinge case back, silvered dial with Arabic numerals, luminous hands, lever movement with fausses cotes decoration, 17 jewels, 3 adjustments, compensation-balance with Breguet balance-spring, end stone on escape wheel, measures approx. 41 x 28,5 mm, overhaul recommended at buyer's expense, condition 2-3