Symes material on the market

It is clear that the appearance of antiquities once handled by Robin Symes can arouse interest by parts of the media. Imagine a forthcoming sale by a major auction-house that includes named Symes material. But what if, alongside the named material, there are items that are also ex-Symes but with a silence in the collecting history? And why would there be silence? Would the due diligence search have failed to identify the pieces? Would such information need to be kept away from public gaze?

Of course, such a scenario is hypthetical. But we wait news of forthcoming sales with much interest.