Mario Barbaglia/Marco Colombo Nautilus lamp questions  

I see a number of lamps by these designers on the Internet, but I'm very curious about this model as I don't see it anywhere.
The shade is paper.
Would be grateful for any insights as to approximately when it was made (1980s?) and anything else about it, including what type of bulb it requires (socket shown below).
I admit that as far as household bulbs go I don't seem to know anything except American standard screw base and the old Luxo Lil bayonet (I know, I know, it's pathetic, but I can change an enlarger bulb in a pitch black color darkroom and only miss four prints on a running quantity easel).
(Hope nobody minds my using these composite pics- not trying to "beat the system"- I use them for a lot of things)
Thanks everyone (and Hi Mark).