Dunno - I thought that all FAA certificates came from a central source ("The FAA") - seeing as they are a natty plastic card containing all your details, certificates and ratings. I'm surprised if they actually manufacture the cards at each FSDO!
I could understand it if someone had to prove that their "based on" certificate needed the English Proficient statement - then you'd have to prove it to the FSDO man, and he'd submit the application back to the FAA saying you were indeed proficient and even possibly issue a "temp" certificate....But of course one can't have a based on CPL - see the confusion?
Still, you live and learn....