Mondaine Watch Helvetica No1 Light 26. Transferring the essence of Helvetica to a watch. The result is a stringent design, with just a few design touches to surprise the eye. The Mondaine Helvetica watches date aperture, for instance, was moved off its traditionally central axis position to fit in with the typography on the dial. Acknowledging both, the font and the first in the collection of this new family member, the Helvetica number 1, with its famous curved crossbar, was cleverly used as a model for the lugs.