Yes Cyberjack, i too was thinking that the carby looked early 60's not early 70's. I just noticed that in the 2 page brochure you attached, it says that, along with a taper drive, the engines could be supplied with other air filters and carbys, so maybe DE Withers specified the old style carburetor with the snorkel. Victa probably still stocked full carburetors for their earlier mowers in 1972.
Thanks again
Tyler
