I have seen many Handel metal overlays (Teroca) and none of the ones I have seen have this condition. Inside of the lamp shade some of the glass panels are shiny and some are dull. There are run marks where the dull ends and the shiny glass starts. The glass artist I contacted said that the glass was either meant to be this way or it was over fired . I was thinking that perhaps this shade was involved in a fire. Although there are painted parts on this lamp which are fine and original the way Handel used to get the paint to adhere to the glass was by baking the shade after it was painted. So I would expect them to be fine even if the lamp was involved in a fire. This is the only thing that makes any sense to me. So far I have tried ammonia, acetone, paint thinner (I certainly did... on a small area on the inside of the shade on a panel which faces the wall), white polishing compound (which gave the shade a very slight sheen) and I have ordered some MAAS metal polish...thank you for the link triciae. Nothing removed the dullness so I really don't feel like it is dirt. But what do I really know. My nana was a teenager when this lamp was made and my mother wasn't even born. LOL. After all is said and done we still enjoy this beautiful lamp every night. It looks fine when turned off and looks stunning turned on. I am happy to have it. I may just have to get over the dullness.

Try here. http://www.lampshademaker.com/glass_torchiere_shades.htm Here is a link that might be useful: Lampshademakerdotcom

Hobbiest! I had not thought of that. I just checked my stained glass shades (repro) I bought from lighting sites: and they DO have much more even foiling and soldering. From my perspective of having taken ONE class in stained glass, I know that the curved pieces in this would have been a bear to foil neatly. I'd rather a hobbiest piece than Hobby Lobby, so that's all to the good. Thanks! Now, to add a nice base to my ongoing search....

The glass and metal lamp shade is a huge part of the value of that style lamp -- and you don't want to just "toss" it. It likely would sell on line -- Facebook Marketplace or Craigs List or Ebay, etc. -- or even a yard sale. If you are not interested in doing that, then, at the very least, donate it to a Habitat for Humanity Restore Store or a charity run thrift store near you that supports a cause in which you believe. IF you want a lamp upgrade, buy a new lamp -- a tall thin metal or wood one with a medium to large white shade. You might even find one you like at Habitat for Humanity Restore Store if you go by to donate the one you have.