Here's an email I got the other day...with regards to the picture of the Nickey wheel...
"Hi Robin,
We sold this set. The new owner has changed directions and wants to sell them. As I recall 3 were GM 4 3/4" pattern in 14" and one new old stock was 15 x 6 in GM. Also one was a 4 1/2" pattern wheel. Total of five wheels. I think $2500 is what he wanted for these wheels. I can check and see with a request.
Terry Rowe
AKHWheels.com"

So, they came in two sizes, and at least two different bolt patterns.