Switzerland. 1955. National Stamp Exhibition in Lausanne (I) andWine festival in Vevey + "Pro Patria" 100 Years of Technology Zurich and Lakes and streams (IV) + "Pro Juventute": the 200th birthday of Charles Pictet de Rochemont and Insects (VI), 3 complete sets, u/m. (Michel 607/610, 613/617, 618/622 - 35E)