Hi WalterP, and a warm welcome to the forum. It's great to have another Scott Bonnar Model 45 owner aboard.
As this thread is already a mixed thread with Jamskin2 and Manch, I would ask you to start a new thread for your restoration in: Forums > Restoring and Customising > Reel-Type Mowers. This will be then create a good archive of your resto.
Could you please post some more pics of your Scotty.... from different angles; one of the cylinder reel, one with the chain-case cover removed, and a close-up of the sprockets where they are not covered by the chain.
Also, can you please post the
complete string of numbers stamped into the air-cowling of the Briggs. This will allow us to give you its date of the engines manufacture.
Just from what I can see, I suspect it be a slightly earlier machine that the date range you have posted, and is unusual that it has Scott Bonnar "Lawn King" handle bars fitted. Your pics will help confirm an approximate date of the chassis manufacture and that, with the engine date, will help narrow that down.

Looking forward to your next posts, Once again,
