Reference 5021 Portugieser | A pink gold automatic perpetual calendar wristwatch with moon phases and power reserve indication, Circa 2020 Dial: black Caliber: cal. C. 50611 automatic, 64 jewels Movement number: 2’937’271 Case: 18k pink gold, sapphire crystal display back secured by six screws Case number: 2’919’999 Closure: 18k pink gold IWC folding clasp Size: 44 mm diameter Signed: case, dial and movement Box: yes Papers: yes Accessories: IWC presentation box, open Guarantee card, and operating instructions book