Dr No[Moderator Omega - Wristscan]
37637
To the best of my recollection, WatchTime did perform . . .
. . . a comparison test between a Glashütte Original Senator Moonphase Panorama Date and a Lange Sax-O-Mat a very long time ago. Unfortunately, I no longer have the issue.
The cal 39 doesn't come with a chronometer certificate; only the cal 58, fitted to the aptly named Senator Chronometer, is supplied with one, to the best of my knowledge.
Cordially,
Art