Proprietary: 1875-91 10¢ Blue, Block of 4, #RB19b, #RB19b, Blue oval cancel, reinforced, minor thinning, still fine and extremely rare item. Cat. $1400+. Estimate $300-400.
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
