An Interesting Watch...I have only seen ONE of these before, and it was in really bad shape. It had the same gold dial as well. Another site lists this watch as the "AIR KING" based on crystal specs alone. The Case Measures approximately 19.5mm X 40mm. Dial appears to be original, as there are no refinishing notches on it. The case is unmarked on the inside. It measures approximately 13mm between the lugs. I find no ads showing this watch.
My 1937 GS catalog list's the MX484 as fitting the Everett. Of course this doesn't mean that it didn't fit less popular models not listed in the index. I can cross reference the MX484 to BB, Perfit and Federal crystals but none list a model.
My 1943 GS catalog does list the MX484 as fitting the Air King at that time but I would lean towards Everett since the subject watch pre-dates the '37 catalog by 2 years.