It's a Sunbeam mower. They were very good for their time. It was our first lawnmower when my folks came to Australia in 1961 and eventually got replaced by a Victa VC-160 Mk II around 1973~4ish if my memory serves me correctly.
Check out the following thread courtesy of CyberJack,
Man that red one really pops in restored condition. Interesting concept.
The only thing that looks bad on it was those cheap Chinese Red wheels when it should've had white plastic units which are probably no where to be found I'd say.
Cheers, BB.
I live a 24 Hour lifestyle, but every now and again I seem to fall asleep, well at least that's what my wife tells me.