I am not an expert on JLC (not proud of that...) and I would like to learn a bit more about the Master Ultra Thin Perpetual Calendar Ref. 176.8.21.
This reference seems to be close to identical to Ref Q1308470, it says Special Edition on the backside, though.
Since I am considering this piece, can any of the JLC connaisseurs on this site provide some more information, e.g. what or who was this SE made for and when, how many pieces were made etc...
Thank you very much in advance!
Cheers
Henrik