Experts! Can anybody confirm the exact factory crown used on the Mark 3 A386? Did they use more than one star variant- specifically the one with a smaller circle? Or were A386's all born with the same big circle star crown? My current A386 (with a D serial and star caseback) has the Zenith square logo on the crown (right size though) which I've been told is a service replacement. If anyone has a deep expertise on this area of the A386 I would love your help before I purchase the wrong crown for the cost of a nice watch. Attached photos are of my watch with its current crown and caseback. Thanks in advance!