Postby silverly » Sat Jul 17, 2010 11:28 pm
From the Encylcopedia of American Silver Manufacturers, Revised 5th Edition, by Dorothy T Rainwater & Martin and Colette Fuller, the mark is I N Deitsch New York, New York, listed in Jeweler's Circulars 1904-15 as manufacturers of sterling silverware. No records after circa 1920.
.