The brand is donating a very special one-of-a-kind Grande Seconde Skelet-One timepiece to the 2019 Only Watch auction. In this one-of-a-kind edition, the rail-track, the gold hour, minute and seconds hands, and the rolled-edge hand-made strap are all reinterpreted in red. Contrasting with the black ceramic of the case and hour ring, red has been chosen as the color of love — and the flag of Monaco, where the charity is based.