I saw J 5TRA on some Bentley thing this morning - the usual misspelt nonsense with an appalling phat italic font. It was in Worksop though so perhaps understandable.
I wasn't sure if this was a C124PPY one or just a badly made normal 'plate but there was a single screw cap over part of the "H" to make it look like "h" and no screw at the other side. No idea what it's supposed to say.