To my knowledge Jimmy never produced crowns.
Jimmy dials had L SWISS L printed below the 6, and the dial looks odd, wrong numeral font and size.
That crown guard lever looks cheap, flimbsy.. well just plain terrible, and the Jimmy CG lever is brushed not polished.
The case lugs look very short, shorter the the standard PAM rep cases, the lugs on Jimmy's cases are longer the the standard PAM rep cases.
These are low quality parts, definitely not Jimmy parts... might be Homer parts...