18th century tablespoon, attrib. George Dowig

Baltimore MD circa 1790, round downturned end with just a hint of a rear midrib extending 3 inches down the handle, unusual double arched drop, length 8 3/4 inches, some tip wear as shown but good overall condition, monogrammed "H" in period script. How certain are we of this attribution? Well, if it's American then the spoon is most certainly Dowig...