This is a great antique miniature kerosene lamp in blue milk glass with an embossed metal brass colored band and fingerhold.  The lamp measures 2 1/2" in height to the top of the font and 6 1/2" in height if you include the clear glass chimney.  A very similar pattern is pictured in the Smith - Miniature Lamps I Book on page 55 Fig. 54.  Condition is excellent with normal wear to the bottom.