Folks,
I agree with djpil and JT about the Victa, it did n't develop a stable spin ----- and I did enough instructing on both the 100HP and the 115hp models for my students to have plenty of opportunity to get into the situation --- stall and recovery training "back in the day" was far different to now.
As an aside, the "good old " C-172 ( and many similar aircraft) was a very different animal at max weight and aft C.of G limit, compared to "utility" weight and C.of G, something I made certain all my students experienced and understood.
Re. many of the twins, not required to demonstrate spin recovery for certification, at the approach to the stall, a PA-23 (Apache/Aztec) had a degree of rudder blanketing such that you could waggle the rudder almost full deflection with little or no result.
Tootle pip!!