What wheel is this?

My guess is Nardi replica from 

http://vintagespeedsterparts.com/steeringwheel-2.aspx

Used ones on flea bay. Mostly from Japan, so smaller diameters. Got mine there, rec'd it in less than 2 weeks, with USPS, being the final carrier.  It's got some patina, but that's fine.

The site I posted is NO relationship to VS.  At $245 complete (+$15 shipping) it seems to be a great deal.  Just add a PORSCHE hub cap emblem to horn button and you are good to go.

Here's mine, I sprayed the Nardi button flat  black, bought a Porsche key knob on ebay, less than $10. Removed the insignia and glued onto the button. 

art posted:

Here's mine, I sprayed the Nardi button flat  black, bought a Porsche key knob on ebay, less than $10. Removed the insignia and glued onto the button. 

That is a great idea!   Fantastic!