Can't identify this tall mid-century floor lamp  

Hmm. . .
good point, Jeff. Maybe it's nothing more than the high gloss on the table top, the family silver on display. . .and the general atmosphere of pallid color and "safe" choices everywhere. My biases are showing, I guess ! I'm sure it's a comfortable and pleasant environment. . .
What else can you recall about the house ? I suppose there's no way to know where those Mondrianesque pieces are now, if the owners have moved on. The screens (doors ?) would have been made for that opening, no ?

The house as I stated previously could easily be mistaken
for having been a Buff, Straub / Smith & Hensman house which is the highest of compliments. I pretty much have full recall in regards to the house as evidenced by my recognition of this lamp. Is there anything specific that you would like to know?
I wish that I could find my correspondense with the previous owners as I remember asking specifically about the lamps and the danish rosewood furniture. Unfortunately, I don't have full recall concerning their response. I remember them relating the lamps with the doors and that they obtained the rosewood furniture on a trip to Denmark.

As the owner of the lamp now,
I can say it is quite in keeping with the periods from F.L. Wright up to the late 60s. My husband was a 60s architect in Florida, and he and his pals were doing a continuation of Wright's organic architecture. You might go to
www.danduckham.com
to see samples by one of the architects in that group. Lamps like this were part of their schemes, as were cantilevered buildings, Tiffany lamps etc., leftovers from the Wright era. As for the family silver and the polished table - looks like European owners might be the answer to this - Italians and French love to combine the old with the new, with a reluctancy to let the past drift away.