Swiss gold watch with chronograph and tachy scale Circa 1925

Gold chronograph with open face by Longines
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A large, attractive Swiss gold pocket watch with chronograph Counter and tachy scale, circa 1925.
Armature chronometer movement with special fine adjustment, chronograph with 30-minute counter. Exceptionally solid 18K gold case. Beautifully enamel dial with red and blue tachy scale, Breguet-style radial hours, Arabic numerals, sunk subsidiary dial for constant seconds, subsidiary dial for the 30-minute counter, blued centre chronograph hand, and gold Breguet hands. Case and movement with matching numbers and dial and case signed.
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Diameter: 52 mm
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Weight: 89 g
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Signed: Longines