Howdy folks.
Thanks everyone for providing clues to this as yet unattainable answer the exact time the 125 ceased to be.
So I'm going to put down to 1977 some time, until confirmation otherwise.
All I do know is it was a pearler of an engine, according to a backyard mower fixer I met decades ago. He claimed that Victa stopped making it because it was a better engine than the 160 and they didn't want it people to choose it over the much touted 160, something like that.
I have to say, I, personally have found the limited 125s I have been exposed to, sound consistently smoother and more balanced sounding than the 160. Not to say I haven't come across the odd 160 that sounds just as good and smooth as the best of 125s, but there is just something well adjusted about the 125s I have come across. I did have a 160 that was so smooth the handles didn't vibrate at all on idle. It had the G3 and it was on a VC -160 from the early 70s and it sounded more like a motorbike engine, than a mower...and I had to sell it!!
Last edited by Mowerfreak; 21/05/18 02:14 AM.