What Nelson clock is this?  

George Nelson clock model...
George Nelson clock model 2237
You missed one at a Wright auction for $4500. I think I will be getting one in my stocking this Xmas.
http://www.architonic.com/dcsht/wall-clock-model-2237-wright/4106007

Ay dios mio. Maybe I'll just...
Ay dios mio. Maybe I'll just print out the picture and hang it on the wall.

One of my favorites...
But yes, print me off a copy as well. Or perhaps I'll get creative with some origami...
CHA CHING!

...or, if you have been...
...or, if you have been really good this year, you may get this version of the clock which supposedly was custom made (larger size)
http://www2.wright20.com:8080/Web_Individual_Lots/B266/112

Snowflake clock
I read somewhere - it might have been in one of the above links - that this is called the snowflake clock, or at least is referred to as that. That name fits.