That doesn't quite mesh, somehow. Assuming that's an accurate read of the numbers - Briggs stampings can leave a bit to be desired at times. A rub over with chalk, then wiping off excess, can help to highlight them.
That 'Combat 45' isn't a 1960's model - see the 1960's Rover brochures in the History Section. I'd be inclined to say 80's or later, most likely.
And for '80s vertical shaft engines, the numbers were usually stamped on the cowling above the spark plug.
I would suggest that that cowling is very likely to be from an older horizontal-shaft Briggs, given the number position and starter orientation. Therefore, non-original to the engine. And it's obviously been repainted to match the engine. Edit: Found that the Model number is correct for vertical shaft, when I checked up.
Any idea which type of ignition it has? Electronic = 1982 or later, for sure.
Last edited by Gadge; 26/02/16 07:31 PM. Reason: Correction