Yep, this is an early Robinson brake which he produced before the 4LS. This one being a 2LS. I've only ever seen 1 other, so it's quite rare. Larger diameter than the 4LS, and about an inch larger than a stock Norton. Well made, and really lightweight. A cool period piece that would be great on any Norton etc.
It's nicely cast, with a shrunk in liner, and riveted. The brake is complete, but needs a standard rebuild.
Selling for what I feel is a reasonable price, and only selling because I need the money to buy something else for my project.
Please PM me if interested. Would love to see it go to a good home.