Joe,

I've owned a few Bish knives. These were well documented examples in fact featured in magazine articles. Think of them as a kit blade. Tommy finished them off as far as I know. Nothing to suggest he altered finished knives. They had his personal touch. Just my .02c. GCTom has the ones I had and many more. He can add much more information.
I'll edit to apologize. I didn't realize this is a for sale post. Probably needs to be moved to a new thread.