The IWC Portofino Chronograph IW3731-03 has a stainless steel & yellow gold case with a diameter of 35.00mm, which holds the ‘MecaQuartz’ caliber 631 chronograph movement. The dial is White. This watch was available from ca. 1988 until 1998.
The IWC Portofino Chronograph IW3731-03 has a stainless steel & yellow gold case with a diameter of 35.00mm, which holds the ‘MecaQuartz’ caliber 631 chronograph movement. The dial is White. This watch was available from ca. 1988 until 1998.
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