Thanks Gil.
The American model supply is very similar. I think though that the one I got is 1/2 HP or larger. This has a 2" bore, and is much larger than my 1/4 HP SIPP. I will have to see if I can track down a set of drawings for this. There are a couple of holes drilled and tapped into the cylinder for cylinder drains (I think) that I cannot figure out the thread on.
Shame about the Cast Iron base if it did have one, it wasn't included in any of the auction lots or in any of the pictures.
Jim in Minnesota