The diligent reader of Emmanuel Breguet's Breguet Watchmakers since 1775 will remember a thumbnail image (glossary, page 353) featuring Breguet from the 1958 trilogy of frescoes The Conquest of Time by Hans Erni (1905-2015); for the curious reader is enclosed the full fresco (Philosophy of time measurement) which Breguet appears in along with the other two frescoes entitled: History of time measurement & Technique of time measurement, larger images of the Philosophy of time measurement painting are also enclosed. I think the frescoes can be seen at the Musée international d'horlogerie.
The Hans Enri Conquête du Temps frescoes were made for the watch section of the Swiss pavilion for the 1958 World's Fair; enclosed is a picture of part of the watch section and the reader can see the fresco History of Time Measurement in the background.