Whale oil lamp, blown & pressed, Sandwich Glass Co.
This little (7 3/4") lamp is free-blown, frosted and cut to clear. The base is a square and stepped and attached with a triple wafer. See Barlow & Kaiser # 2065 for font shape and cut. The condition is excellent with no chips on the outside and minor chips on the inside of the base, Boston & Sandwich Glass Co., Ca 1830/40.