The IWC Portugieser Constant-Force Tourbillon reference IW5901-07 was made in 2017 as a unique piece. It features a Red Gold case and a Black dial. Inside ticks the hand-wound caliber 94800.
The IWC Portugieser Constant-Force Tourbillon reference IW5901-07 was made in 2017 as a unique piece. It features a Red Gold case and a Black dial. Inside ticks the hand-wound caliber 94800.
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