The IWC Portofino Automatic Moon Phase 37 was introduced in 2014. It marked the return of the moonphase display to the Portofino collection, which had been absent since the discontinuation of the Vintage Collection Portofino.Reference IW4590-14 has a Red Gold case and a bezel set with 66 diamonds. The dial is Silver. It was added to the collection in 2021.
