vintage Noguchi floor lamp  

I have a vintage Noguchi floor lamp that I would like to restore. The shade has the red sun and moon symbol, but it is torn and broken. The base shows the Noguchi signature on the bottom, but I'm not sure how the shade attaches. The lamp is 63" high to the top of the light bulb and the metal base is about 6 1/2" x 6 1/2" x 3 1/2"h. The light socket has "Leviton" written on the side. How do I find a model number? And where can I buy a new or vintage shade? If anyone can help, I would appreciate and suggestions.