Hello
Max, MF, Norm, Tyler, and
Charlie.I'm glad this is not my area of expertise!
Charlie, you have Victa experts commenting here.
I'll just throw in what I found. I don't know what it means.

Victa does seem to follow a certain logic.
Max has pointed out the difficulties here - after three decades!
Replacement parts, etc.
But even if the parts were original, it may not narrow the field to identification.
This is because Victa never published parts lists for store brands.
Victa were quite happy to customize mowers to client's need, but would never
offer the latest features for store brands. At best, Victa offered the
same features as their then current budget range.
Looking at this case, the best evidence was the '260 87' Charlie gave.
In my
incomplete Victa Spares Manual for 86-87 I found a reference to a '260'.
[see below].
Also note that the 'Wildcat' does appear again in the Victa Code reference for 1987-88,
but does not appear in the 1987-88 Victa Spares Manual.
My best guess is a Wildcat, or a store brand made with premium wheels,
but with budget cowling, handle and decals.
Maybe ...
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Jack