Good points Bob, to add a little more:
Parts for the base could be sourced from many late 70's bases, the specific base itself was used on some store brand mowers, and some victa mowers from about 76 to about 83, Such as the Series 80 Corsair.
The engine as above was widespread, the cowl was used on some store brands, and a few Victas of the late 70's, even the Utility at one point.
From a collecting standpoint, it's not a bad mower, not yet really a collectable, but not too far off, and particularly of interest to anyone who fancies the Corvette series (Victa's longest running badge)