Longines One Button Flyback Chronograph

Asking: $2500 USD More pictures and video of the motion works here (www.secondtimeticking.com)
Age: 1940s
Maker: Longines (I have a request in with their archives department, and should have some additional goodies to add soon!)
Case: Thick 10K gold filled case. A few dings, opener marks and scratches, but in remarkable condition for its age. It has gotten a light touch up with a hand polishing cloth, but we refuse to submit this piece to heavy polishing and will leave that decision to the buyer.
Inside caseback marked with correct United States casing logo “Cased And Timed In U.S.A By Longines” Serial number: 9305237. Just one service mark.
Dial: Clean dial with some evidence of patina and light wear. I'll direct your attention to the slight paint loss around the subdial. This is likely to be an early refinished dial, and so paint or finish is not factory original. (Please note that I originally listed this as a factory finish dial which would merit a substantial premium; I can no longer be totally confident in that claim, so I am editing this part of the listing. Hat tip goes to Dennis--thank you.)
Hands: Original leaf style hands in gold with subseconds hand. The blued steel hands are just gorgeous; the color shifts depending on the angle of viewing from a rich, electric blue to dark navy, almost black. The thick blue hand is the center minute recorder, and the thin blue hand is the sweep seconds recorder.
Movement: Famous Swiss made Longines Calibre 12.68Z in superb overall condition. Features a Breguet style hairspring, rare Incabloc shock system on the balance. Movement signed Longines Watch Co., Swiss. Appropriately marked Brevet by the center seconds wheel. Seventeen Jewels, “Unadjusted” (for import duties). The balance bridge is marked “LXW,” and the movement serial number is: 6151483. This fascinating movement is one of the truly important calibres in the development of the modern chronograph. It contains a double flyback hammer lever that resets both the central sweep second chronograph hand and the central minute counter hands. This is not your average chronograph. Indeed, the timing function runs at all times and is reset to zero by activating the pusher at 2 O’Clock. Alternatively, the movement was designed so that light pressure on the pusher will pause the chrono function to permit a more accurate reading. When pressure is released, the chrono resumes without being reset.
Not only is this calibre technically astounding, but it’s also a feast for the eyes. If you’ve never encountered true anglage or black polishing, I’d encourage you to indulge yourself with a little research. The painstaking filing and polishing work that went into decorating this movement is really something special. Please take some time to enjoy the photography and the movies of the motion work.
Fully serviced by our master watchmaker.
Dimensions: 31 mm x 39 mm without crown
Condition: Beautiful, truly rare piece, that belongs in the collection of any Longines specialist, or to serve as the cornerstone of a budding vintage chronograph collection.
Band: Handsomely fitted with a genuine lizard strap in black, 16mm.

She's a beauty. Definitely wears like a vintage piece though at 31mm.