I went ahead and purchased it. The price seemed right. The seller found some paper work that indicates it was made by Sanki and Yamazen was just a distributor. Yamazen terminated their relationship in 1989 two years after the mill was made. It has an Allen Bradley Series B 8400 control. The paper work does not say what type of spindle it has. I will have to have someone who is more knowledgeable than me look and it and let me know. I plan on stripping off the Allen Bradley control and using Mach 3 to control it. It's a big project and hopefully I won't get bogged down.
I will post pictures once I get it to my shop.
Vince