This artistically rendered sketch shows the reverse side of the Magnum Opus Mars Traveller watch – conceived by Konstantin Chaykin as the pinnacle of his “Mars Time” programme, dedicated to creating new space- and Mars-related complications for mechanical watches. For the Magnum Opus Mars Traveller, Chaykin set out to include the greatest possible number of complications.

The drawing once again takes the form of a horological puzzle: which specific complications did the master intend for each of the subdials on this side? Even producing this sketch proved demanding – it required at least five days of work, from 1 to 5 July 2020. Dimensions of the drawing: 24 × 32 cm.