Great Central Fair for the Sanitary Commission, brown illustrated design with "Philadelphia. Office 1323 Chestnut St." imprint at left, on fresh cover to Pottsville, Pa., franked with 1861, 3¢ rose tied by Phila., Pa., Apr 26, 1864 cds and target duplex, Extremely Fine, a select example of this popular Sanitary Fair design, ex Bischel. Scott No. 65  Estimate $500 - 750. $0 (Image)