"The COA number does not necessarily indicated whether its the first batch or second. I have 2 running number COA in low 200's but both are different, as seen in the pictures I posted above."
Did Peter not say he THINKS it is the first 225. So if you had two coins delivered both in low 200's, (each with different dies) then it could very well be correct that the COA number correlates to the production of the coin?
And if you have consecutive numbers - maybe you got the last of the old die and the first of the new die?

That would be cool