This is a very nice clear glass oil lamp in the Crown pattern with the black base by the Dalzell, Gilmore and Leighton Company of Findlay, Ohio.  The No. 1 lamp measures 8" in height to the top of the font by 4 1/4" at the base.  The lamp is in excellent condition with a couple of very minor rough points on the base with a nice brass Queen Anne burner.