Russia, Sheet Accumulation, 1948-77. Holding of commemoratives and definitives, mint virtually all in complete sheet format with a total of 31 sheets, cataloging in 1999 at over 10,000 marks in Michel (about $7,000). Some of the values represent 'key' denominations of various series up to 2r, also airmails, se-tenants, etc. Estimate  $200 - 300. $0