Canada, Airmail Semi-Official, 1919, $1 Aero Club of Canada, Toronto-New York, Block of 4, Unitrade #CLP3, unused, "tiny thin on upper left stamp", centered Very Fine, APS (2006) cert. Unitrade C$1,000. Estimate $200-250.
Harmer-Schau Auction Galleries, Inc. 1333 North McDowell Blvd., Suite B • Petaluma, California 94954
Tel: 707-778-6454 • Fax: 707-763-6772 • Toll Free 800-378-6454
E-mail: info@harmerschau.com