Some grails are special because of their association with history (see my piece on the “Scuderia Ferrari” Zenith, for example), while others are just plain odd. This is the latter. The Girard Perregaux Casquette (Ref. 9931) is a mid-1970’s LED quartz watch with innovations throughout. It’s just too bad the quartz revolution ended with a whimper instead of this kind of excitement!