Three ex OzJet B737's have been parked at PER for a while now.
One carries the US registration N732HV and is registered in the name of WELLS FARGO BANK. Nothing wrong with that it seems.
The other two carry the registration N737HL (former VH-OZX) and N733HL (former VH-OZU). There is no record of these aircraft being registered in the USA according to the FAA website, although the registrations are reserved for the broker that is trying to sell them.
This is what a US Law (para 46306) has to say about improperly displaying registration marks on aircraft:
General Criminal Penalty.—
Except as provided by subsection (c) of this section, a person shall be fined under title 18, imprisoned for not more than 3 years, or both, if the person knowingly and willfully displays or causes to be displayed on an aircraft a mark that is false or misleading about the nationality or registration of the aircraft;
