Have you spoken to mikenoodle about that? He MIGHT be the biggest cynic I've read about being willing to accept evidence of double mint set coins.
I don’t think I’ve seen his thoughts on it. I’m cynical of them too though I put more value in the fact it’s complete than whether those were the actual ones to leave the mint in it. That said with consecutive serial numbers I do know for a fact that anything with those was graded in the same submission