Thanks for the info. It looks like an old model, I couldn't find any reviews or comments.
My first choice would have been a Shindo but the owner changed his mind, hard to find and expensive but the sound... There are a few at Buyee Jp. auctions in Japan but it is risky, no warranties of any kind.
I was touched by Kevin's message, that he considers it an honor that I am considering the VAC Vintage for my ultimate system.
He said that generally not much goes wrong with these, and it is exceedingly rare for one to come in for repair. The most common problem is the output coupling capacitors of the Mk III version, and there might be a handful of resistors that we would recommend replacing; he would expect it all to be under $300 plus shipping, including full testing and audition. Valves and cosmetic issues are not included in this discussion.
It maybe be a fine complement to my Berning ZH-230.
Cheers,
Horacio