Page 215, "American Copper and Brass" Henry J. Kauffman: "Typical "S" shaped door knocker of the eighteenth century. (Bottom striking plate missing) None of these has been identified as the product of an American Brass founder.
The back of this fine specimen of late eighteenth-century brass door knocker was hollowed to reduce the quantity of brass needed for the casting. It was fastened by bolts on the inside of the door. Courtest, William Ball. 2 copies
