EXTREMELY FINE. A GORGEOUS 10-CENT FRAMELINE ON COVER. RARELY FOUND WITH SUCH A LARGE PORTION OF THE FRAMELINES.
The most important characteristic of Scott 10 is the frameline around each stamp. The lines were engraved on the plate and served as a guide for the siderographer when aligning the transfer roll to make the plate. Each stamp shares framelines with the adjoining positions, which means most stamps show only a portion of the four framelines. A stamp that captures most or all of the framelines does so at the expense of its neighboring positions, and is very rare.
For many years this April 23 cover was the earliest known use of the 10c Frameline. The EDU is now April 19.
Ex Brown, Shenfield and Kilbourne. With 1981 P.F. certificate. C.S.A. Catalog value for April 1863 date on cover is $10,500.00