You know very well this piece and you rightly highlight its dial: it is a masterpiece, so simple, so wide, so plain... and so difficult to produce!!! My first choice in the Pano line, just followed by the PanoInverse. And yes, the thin milling in the reserve subdial is amazing 
This model is in some way the best way to explain GO: panorama datum (exactly at midnight!), double swan neck, three engraved bridges, gold screwed chaton. and hand winding!
I love it.
Thanks for looking and for the kind words,
massi