• P.2002/1: Power reserve linear indicator
• P.2002/2: Power reserve indicator using a rotating disc with a red indicator
• P.2002/3: Power reserve linear indicator; No GMT or day/night display at 9 o’clock.
• P.2002/7: No power reserve indicator; No GMT or day/night display at 9 o’clock.
• P.2002/9: No GMT or day/night display at 9 o’clock. Power reserve indicator located on the back of the movement
• P.2002/10: Version of P.2002/1 with distinct, partially skeletonized finish.

image source: www.zeitauktion.com