Hi 2IC, and a warm welcome to the forum.
It's always great to welcome another Scott Bonnar owner on board.
Your machine has the older style SB decals but is the later style twin-rail engine deck. I would surmise that yours is a 'transitional' machine (and a genuine Scotty Model 45) that was assembled around 1976-77 prior to the introduction of the later model (orange painted) Briggs and Stratton engines.
Your machine is unusual for a 14" machine having the 3HP engine fitted....maybe this was a special order for a customer who for whatever reason needed the extra horsepower.....maybe a steep sloping terraced lawn.

I wish we had more records from SB to find out the reason.
It is a very nice machine.

on a good score!
Once again 2IC,

to OutdoorKing.
