DETAILS An antique American pewter porringer, of traditional form with a shallow, round bowl with a flat, openwork coronet or crown-eared handle. PLACE OF ORIGIN United States MAKER Thomas Danforth Boardman (1784-1873) | Sherman Boardman (Hartford, CT, 1787-1861) MARKS Touch mark (handle): TD & SB. PERIOD Early 19th century DATE Circa 1810 DIMENSIONS Width 7.5 Depth 5 Height 1.75 inches