Case material: Steel; Charge: Manual; Conditions: Good Year : 1947; Presentation condition : With dealer guarantee ; Model: Pilot Mark Price on request Gmtbroker Reference: 6B/346 This pre-owned gents Iwc Mark XI is in good condition complete with xupes presentation box. Circa 1947. The case bears the serial number 123***. The model number is 6B/346. Xupes 12 month warranty. Our Xupes reference is COM557 should you need to quote this.