The statements regarding the author, the attribution, the origin, the period, the provenance and the conditions of the lots in the catalog are to be considered as a personal opinion of the experts and scholars possibly consulted and not a fact.
Artist name : the work, in our opinion, is the work of the artist.
Attributed to (artist name) : the work, in our opinion, is probably the work of the artist, but there is no certainty.
Workshop of (artist name) : the work, in our opinion, [..]