As I recall it was a last 60's , early 70's low arch Victa with a full crank engine with a Zip start on top and a plastic carb....
Hope this helps...!
Thanks
The G4 carburetor, snorkel and throttle system came out for the 1976 season onwards. Yours could be a bitsa. Victa continued selling mowers with the 1960s designed low arch bases throughout the 1970s and possibly into the early 80s, for store brands and entry level models.