IWC Case round yellow gold case with snap on back case back Strap brown leather bracelet with gold plated buckle, unsigned Dial yellow colored dial with printed Arabic numerals, small seconds at 6 o'clock and signed with maker Movement Rhodium-plated hand wound movement with Geneva stripes & a date complication Cal. C83 Movement No. 10406** Case No. 10829** D= ca 30.5 mm