I have never heard or read anything about a full soundtrack album having ever been released.
But, there is a good possibility that there were a couple of 45rpm singles out in Japan and Italy.
I would need to confirm that, though.
It just seems like I was talking to a friend of mine from Japan once who said he had a 45 with the main theme on it.
I don't recall if it was the original soundtrack recording by Ivan Vandor, or a cover version, though.
Sadly, no CD!
This is one of my favorite Spaghetti Western scores and I really think it deserves a release!