IWC Schaffhausen has created limited edition 18ct red gold collectors’ editions for its two most complicated timepieces.
Only 50 of the Ingenieur Constant-Force Tourbillon (Ref. IW590002) will be made, while the Ingenieur Perpetual Calendar Digital Date-Month (Ref. IW379203) is limited to 100 pieces.
The IWC Ingenieur Constant-Force Tourbillon has a double moon phase display for northern and southern hemispheres; a countdown display showing phases until next full moon; a tourbillon with integrated constant-force mechanism; a Glucydur beryllium alloy balance with high-precision adjustment cam on balance arms; a screw-in crown and see-through sapphire-glass back.
The Ingenieur Perpetual Calendar Digital Date-Month features a perpetual calendar together with a digital date display and leap year indicator. Every night, when the date display advances, the integrated IWC quick-action switch siphons off a little of the energy, stores it and then discharges it precisely at the end of the month.
Prices have not been disclosed.