unused cover General Foreign, 19th-20th Century, accumulation of thousands of stamps in nine albums and a few hundred glassines, incl. mint Switzerland nos. 242, B3, B25-B28 (blocks of four), B131, B132, B143, B144, B178, also incl. two volume collection of Costa Rica incl. errors and varieties, and a two volume accumulation of covers incl. flights and ship mail, mostly fine-very fine