Is SR-3V low temper or high temper?

Knowing that Busse likes cryogenic treatment, I'm 99% sure it's low temperature tempered (400F or something like that), after that deep cool. High temper after cryogenic treatment doesn't make sense to me.
 
I'll wager 1 whiskey and a half, Jerry has experimented with what yielded a more durable blade and went with it. Jerry has also never been one to share what they do for heat treat either.
 
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