Yes. Registered in Chonburi near Pattaya, with Chonburi plates,
My name is in the Blue Book,
And it still has Chonburi Plates. So yes they are Different. Perfectly legal.
As I said it is not law to have the plates of your province.
On a side note we were over in Trat and my Missus was in the 7/11, there was an eagle eyed cop in there, he asked her why are you in Trat, she answered him, "we go holiday Koh Chang", even she thought it was some how illegal...............