Attributed to Griswold, this antique wall-mounted mailbox is constructed of heavy cast iron with a black painted finish measuring 5.5x12in. The design features a vertical, slender body with a rounded front face and a top-hinged lid for mail insertion. At the base is a circular viewing port with a cast-in cross motif, a specific design element intended to allow a homeowner to verify mail delivery without opening the box. The back of the unit is flat with three pre-drilled mounting holes for secure attachment to a wall or post. The interior underside of the lid features the raised, cast characters 3 3 0, which likely serve as a pattern or part number. No manufacturer name is visible on the exterior. A small wire hook is attached to the right side of the casing.