This instrument was displayed at an exposition in Paris in 1936 by the exhibitor Monsieur G. Bernard. In March-April 1936 the ‘Exposition des instruments et outils d'autrefois’ was held in the Musée des Arts décoratifs, housed in the Louvre. One of the exhibitors was Georges Bernard. He was also co-author of the catalogue. (Thanks to Jeroen Meeusen).