Rare, vintage brass maritime tip-over resistant oil table lamp, marked "British Made".  Takes a 3/4" wick (included) and a 2 1/2" wide chimney (not included).  Has a 1" x 1" dent on the side of the base.  Measures just under 5" across by 4 1/4" tall and weighs 7 ounces.

Thanks for looking and BEST WISHES TO ALL.