Dr No[Moderator Omega - Wristscan]
37729
These weekly calendars have a captivating effect . . .
. . . similar to that of a perpetual. There was a striking blue dial version, if memory serves correct.
Also, another manufacturer (Nivrel?) produced similar complications, possibly without the power reserve indicator.
Welcome to WristScan, Ruffian. May I suggest making an introductory thread on our HoMe forum? Likely you've a few other interesting watches to share.
Cordially,
Art