I note from the BOAF Press Release that:
'Participants will ensure that they exhibit Oriental and Asian antiquities of a quality compatible with the requirements of a high-level fair and they bear sole responsibility for the items they exhibit. Items which are of doubtful origin and in general items which B.O.A. Organisation considers are not of the quality expected for presentation at the Fair may not under any circumstances be exhibited there'.So how do you ensure that a piece is not of 'doubtful origin', i.e. has not been removed from an archaeological site by illicit means? The suggestion is that vendors should contact The Art Loss Register.
Imagine the answer.
'When the artefact was deposited in its archaeological context 800 years ago, the then owner did not register it with The Art Loss Register. There is no record in our database.'So you can sell with a clear conscience ... surely?