I'm presuming Bell would and have pulled a 204 off the production line and allocated it to the military.
Many years ago the outfit I was with at the time found a low time project AB212 with Agusta Serial Plate.
After some research we discovered that it was an original Bell machine pulled off the production line and allocated to Agusta you supplied it to a paramilitary outfit with thier own Serial Plate.
After some negotiation and inspections Bell reissued the Bell Data plate. Really the only proviso was that everything had to be original Bell not Agusta.
Apart from one lower panel which was Helicomb was all good.
Very low hour machine.