1850-1980 balance of a specialized collection in albums and loose, thousands of used and unused singles and sets, strength in Rayons, Sitting and Standing Helvetia, Numerals, UPU, William Tell, commemoratives, Pro-Juventute and Pro-Patria, Air Post, with forerunners, souvenir sheets, collected both used and unused, also covers, postal stationery, much specialized material, mixed condition, high catalogue value *O