From what we have been told in the past, I believe the plaque number has nothing to do with the helmet or what order they were made in, but it would be nice to know exactly what that number means.
I think they put the plaques in when they arrive in the states. I know in the past, both MR and eFX would let you return something for a replacement and tell you to keep the plaque and not give you a new one with the replacement.
I can't wait to see how your fix comes out.