Air Command is rare , documents are scarce, it is difficult to make a solid statement on this, that said:
-Stop second has been seen on one example, not every one. If I wrote it I might have been mistaken at the time I wrote the post on the Air Command some years ago because one had it. Not having it is not a problem.
-BUT Unsigned movement, like Nicolas, that's not a good sign to me too. From this I have doubs on the legitimacy of this caliber in that watch. I would say it has been assembled recently.
Other lots are not what they are said to be.
-An easy one is the Breitling Navitimer , in the first years, the 1955 had all "small Pearl" (beaded) bezel. This bezel is from the late 50s , maybe 1960 (which fits the selling date). And that dial Version is not supremely rare.
Wether the caseback is not the original, or the bezel was changed, or it's a 1960's watch with a mistake on the caseback stamp Happened sometimes, there is a similar story with "1953" Navitimers which are actually from the late 50s, 1960. A detailed photo of the caliber would help.
I wished Philipps scholars had done their work on every watch presented at the auction, especially the Navitimer, where documents, examples and knowledge are out there.
Francois