Help identifying mystery B&S

[DeltaT]

Hi, I need to replace the engine on my old Victa tiller but the serial numbers are long gone. Can anyone recognise what I have?
Thanks in advance.

 

[Rivets]

With a wet green scrubbing pad gently scrub the top of the shroud where the spark plug comes out. Should find numbers there. If not there scrub the side of the shroud.

 

[DeltaT]

Found it Rivets may thanks. Almost rusted away but the scourer revealed just enough to get most of the numbers.