Limited Edition of 99 Pieces. Louis Erard Excellence Guilloche Main II Limited Edition 34237AA95.BVA103. Louis Erard wanted this second opus of Excellence Guilloche Main to be a 100% original creation, starting from the design, and utilising all the resources of artisan dial maker Fehr in La Chaux de Fonds to bring the ancestral art of guilloche engraving to the 21st century. Guilloche is no longer a question of decoration; it’s a subject in and of itself: a large diamond, an ace of diamonds, with a kinetic feel.