EXTREMELY FINE. A SUPERB EXAMPLE OF THE RARE OXFORD ROULETTE -- THE ONLY PERFORATION APPLIED TO THE 20-CENT GENERAL ISSUE.
VERY FINE. ONE OF THREE RECORDED COVERS WITH A COMBINATION OF THE OFFICIAL PERFORATED ISSUE AND A PRE-WAR UNITED STATES STAMP.
There are six recorded turned usages of the officially perforated stamps, including three combinations with United States stamps issued before the war. A similar cover realized $1,700 hammer in our Sale 801 (June 1998).