|Attic white ground lekythos|
Source: Schinousa Archive
The Attic white-ground lekythos has been identified from images in the Schinousa Archive showing that it was part of the stock of Robin Symes. Notice the deposits still on the lekythos. When was the lekythos cleaned? Who did the cleaning?
The other Steinhardt pieces are identified in the Medici Dossier as well as the Becchina Archive.
The pieces from Phoenix Ancient Art include items identified from the Medici Dossier (at least 3 items) and the Becchina Archive (at least 1 item).
I expect that the routes through which these pieces passed will be revealed shortly.