OK Polybus I was on the right track,it is the later model from 1970-71 Self-Propelled model number 70VA victacode V69.It should have had a G3 carby.Your one was made in 1971.This is the 2nd last model of the self-propelled,I'm green with envy as that and the last model I'm still trying to find.
[Linked Image]
You have done really well.
[Linked Image]
If you decide you don't want to restore it let me know.I'm sorry I just had to say that.

Here for a good time,not a long time.