Old Stiffel lamps come up often at auction. Lots of "antiqued" brass, even though the majority of them are only brass plated. You can usually pick them up cheap, and as these had nice shapes, I did. Not a pair, but definitely related, and a nice size.
One of them has a bit of corrosion, so when I took them to the guys at Acme Brass Plating we decided we'd start with the clean one first and see how it went. I picked it up over lunch today, I think it went well.