DIE 2 PLATE 45 (SL) ROSE RED ON WHITE PAPER PERFORATION 14 (SG40) USED ON COVER. 1857 envelope London to Rochester with a fine used example lettered SL cancelled London "19" numeral backstamped DE.22.1857. Envelope with "Britannia Life Assurance Office" imprint on front and embossed emblem on reverse. (Ref 67408).