IWC PORTUGUESE TOURBILLON PINK GOLD
International Watch Co., Schaffhausen, "Portuguese
Tourbillon", case No.3917362, Ref. 546302. Made circa 2015.
Very fine and rare, large, self-winding, water-resistant, 18K
pink gold wristwatch with visible flying one-minute tourbillon
regulator and an 18K pink gold IWC deployant clasp.
Three-body, polished and brushed, concave lugs, transparent
case back secured with 6 screws, sapphire crystals.
Matte silver with applied pink gold Arabic numerals, outer
minute divisions, subsidiary dial for the seconds, aperture at 9
position for the visible tourbillon. Pink gold fueille hands.
Cal. C 90900, rhodium-plated, fausses cotes decoration,
28 jewels, three, straight-line lever escapement, monometallic
balance adjusted to 5 positions, shock absorber, self-compensating
blued steel Breguet balance spring,, rotor with inset 18K gold