1851 6p green, margins all around, canceled by oval grids on buff cover to Frederick City, MD, red "Paid 10 Cents" and various markings on back including Bridgewater Mar 21, 1857, St. Johns, New Brunswick, etc., some backflap flaws, otherwise fine, cat. $1600 (Cat No. 4) (Image)

Cat. $1600, Est.$500