Hausmann & Co. Very Rare Gold Single Button Spli

Hausmann & Co. Very Rare Gold Single Button Split Seconds Chronograph, circa 1925
Case: 18k yellow gold, four body, hinged gold cuvette signed "Hausmann & Co. Roma, Napoli, Genova", 46 mm, moveable wire lugs, oval single button for activating the split second function, coaxial round button on the winding crown for the start, stop and return functions
Dial: white enamel, open Arabic numerals, outermost 1/5th second marks, spiral tachometer scale in red at center, thirty minute register at three, constant subsidiary seconds at nine, luminous skeleton hands
Movement: 17 lignes, gilt, straight line lever escapement, bi-metallic balance with Breguet balance spring, swan's neck regulator, 22 jewels
Band: tan crocodile with 18k buckle
Signed: dial signed Hausmann & Co.

Type: Hausmann & Co. Very Rare Gold Single Button Split Seconds Chronograph
Dial: enamel, open Arabic numerals
Hands; luminous skeleton hands
Metal: 18k yellow gold
Case No: 66347
Case Info: four body, hinged gold cuvette, snap back
Case Width: 46 mm
Crystal: glass
Watch Movement: 17 lignes, gilt, straight line lever escapement, bi-metallic balance with Breguet balance spring, swan's neck regulator, 22 jewels
Band: tan crocodile with 18k gold buckle
Circa: 1925
Condition: dial is very good, movement is very good, case is good, some very light scratches on the case back, two tiny dings on the bezel near 4 and 5