All in glassine envelopes with Scott numbers written on each envelope. Starting Scott number 551 – 1925 regular issue and Scott number 1269 from 1965. Majority from 1930s, 1940s and 1950s. Almost 700 envelopes filled with stamps. Each numbered on the outside with the appropriate Scott number. Too many to count each envelope, but estimate is greater than 3000+ stamps as each envelope has multiple quantities. First reasonable offer gets them. The box measures 4 inches wide by 10 inches long and is full as shown in the pictures. Message with any questions. Track Page Views With.