Hi Dano,
You've asked about the possibility of it being Peill & Putzler over email, I'll answer in the thread just to keep info available for others.
Though I have a lot of P&P vases, I don't have any catalogues (and I haven't studied lamp designs). P&P vases are often marked with a double P etchmark, which makes it easier to identify them.
What I can tell is that P&P lamp designs are usually a bit more 'modern' looking. The shape of your lamp looks '70s to me, but in the P&P 70's designs were often more abstract, often geometrical. The flower pattern etched on it looks off to me.
I can't rule out that it might be P&P, but it wouldn't be my first bet. It still might be German, though.
What I would do if I were in your shoes is to check shops on internet that sell vintage design lamps, to get a general feel for period design. Not that each and every attribution will be right, but checking out many of them will give you a better feeling which country or maker would fit better.
Good luck,
Astrid