Rare, if it is complete and in good condition very, very collectible. I would not want to use it but it would be an excellent addition to a collection. West Bend 8 cube engine, that right there says it all.
I ran a smaller model briefly, that was long enough.
Here a few of my pic's 120 logger.
This one was distributed in Australia.
It doe's run but needs a tuneup.
Powered by the 820 West Bend at 134cc's
They had power. Many kart racers used to
rob the 820 Bender motors out of saws for
there karts.
Thats one beast of a saw Lee, and I bet it would sing once it is tuned up. I have never seen one of these saws out here in Australia, but I assume that there must be one or two around.
You have some real muscle in your saw collection - well done!