The Bulgarian Constitutional Court has struck down parts of a new law that requires Bulgarian collectors to register their collections with the State.
As I understand it from a Bulgarian source,
1. The possessors of cultural goods now can demonstrate their ownership with an invoice, a declaration from a previous owner, etc. It is not necessary to have an "official document" to do so.
2. For cultural goods considered to be "national heritage" one may now be an "owner" without presentation of an official document (issued by the state institution). The law had stated the possessor was only entitled to "hold" the artifact without an official document.
The effect of the ruling will presumably make it easier for Bulgarian collectors to "own" artifacts legally, and, as such, is a recognition that ancient artifacts are sold quite openly in Bulgaria, despite suggestions to the contrary on some of the archaeological blogs.