• Movement 
    Automatic
  • Year of manufacture 
    1970
  • Lot number 
    90
  • Diameter 
    41
  • Location

Description

IWC REF. 3714 PORTUGUESE CHRONOGRAPH
AUTOMATIC STEEL
International Watch Co., Schaffhausen, "Portuguese Chronograph
Automatic", case No. 3240249, Ref. 3714. Sold in May 2008.
Very fine, large, self-winding, water-resistant, stainless steel
wristwatch with round button chronograph, register and a stainless
steel IWC buckle. Accompanied by a fitted box, warranty card,
instruction booklet, international guarantee, booklets.
Three-body, polished and brushed, overhanging bezel, concave
lugs, case back with 4 screws, domed sapphire crystal.
Matte black with applied steel Arabic numerals, outer dot
minute divisions, outer most 1/5th seconds scale with 5-minute/
seconds Arabic markers, subsidiary dials for the seconds and
30-minute register. Steel feuille hands.
Cal. 79240, gilt brass, oeil-de-perdrix decoration, 31 jewels,
straight-line lever escapement, monometallic balance adjusted to
5 positions, shock absorber, selfcompensating flat balance spring,
hack mechanism.