Very thin Swiss 18 carat gold lever pocket watch Circa 1970

Gold lever open faced watch 
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A very thin 18K gold IWC dress watch  with original warranty booklet, circa 1970. An 18K gold, punched, pressed back, very flat bar movement, nickel plated and decorated with stripes, monometallic balance wheel, blued Breguet hairspring, shock absorber, Swiss pallet lever escapement, rubies, polished steel screws, main plate/ bridge signed “International Watch Co Swiss”, winding and time setting with crown, original, white lacquered dial with black Roman numerals, subsidiary seconds, signed, gilt hands black lacquered, very thin design, excellent condition, with original papers, formerly sold on August 14th, 1975, in Basel.
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Diameter: 45 mm
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Weight: 50 g
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Thickness: 9mm
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Signed: International Watch Co., Schaffhausen