Fifty years ago ( I'm 86) I ran across this lantern and added it to our lamp collection as a fun item. It attracted more interest over the years than did my railroad lamps. Friends would pick it up and many immediatley commented about Sherlock Holmes. I am not sure I read about Sherlock and a bulls-eye lamp but I think I saw Dr. Watson using one in one or two of the old movies about the detective.Anyhow, is a tin bulls-eye for your pleasure. I think it was called this because of the thick magnifying lens. It was used as we would use we use a flashlight in that it can be darkened with a lever. The lever rotates an inner tin curtain which blocks the light from the lens. I have no provence and t are no manufacturer's marks. My guess that this one was made by a small tinker shop. In honesty the knob that moves the blackout curtain is not origional nor the paint but it adds to the looks if not the value. This lantern is a good 'talking piece'. Most everyone has heard of a bulls-eye lamp but who has seen one? Someone has emailed me that this lantern may be a whale oil lamp sold by Montgomery Ward in1950. I thinl it is a whale oil lamp made out of tin but I can not verify montgomery Ward and 1850 CORRECTION THAT WAS 1850 I AM TOLD THE MODEL NUMBER IS 55855 BUT I CAN'T FIND ANY NUMBERS UNLESS THEY ARE UNDER THE PAINT. THE ODD THING IS IS I BOUGHT THIS AT A SALE WHEN I LIVED T AND THIS IN THE HOME OF "MONKEY WARDS' AS WE CALLED THE COMPANY.