Original Natural Gas Antique Bradley & Hubbard Mission Green Slag Cast Iron Lamp. This is still the original natural gas powered lamp and has not been converted to electric. No markings that I can see but matches 2 other Bradley & Hubbard lamps online. The lighted picture was done with a flashlight to show the glass. RC can for reference only. One of the lower panel glass is cracked and missing a small piece. I did find replacements online but a collector said to leave it and was more valuable as is. Could be easily converted to electric if desired. Cast Iron, Glass and a Brass gas burner Weighs about 15 lbs.