Marking on the lantern - look at the pictures. Used aladdin oil lamp - I have not clean it up - it does have grim on it - it has couple of surface scratches (look at the picture) bottom side of scratches you can not feel them - bottom unscrews of the tank - base is turning green - I have not tested it - wick moves up and down - chimney is a laddin and marked - overall it is a clean good oil lantern - clean it up and use it or parts - also person can add to your collection.
Actual weight is 3 lb. PLEASE look at the pictures closely to see the condition. This is a Estate sale find. I Have not cleaned it up.