What other artworks passed through Silberman Galleries?

The Times' David Sanderson just published "Painting from Hitler’s love nest hangs in the National Gallery" reminding us that Silberman Galleries provided false information to the UK National Gallery of Art about the 16th-century painting Cupid Complaining to Venus.  

Its provenance has long been known to have a big Nazi era gap, and was even published in the National Gallery's Whereabouts of paintings 1933-1945 and in the Collection Trust's Spoliation Reports. 

The Times article includes a photo of the Cranach "hanging in the living room of Hitler’s private Munich apartment, where he often entertained his mistress, Eva Braun".

All this poses two obvious questions. 

1) How is the UK National Gallery of Art advancing in its research into the many many artworks with Nazi-era gaps?

and

2) What other artworks passed through E. & A. Silberman Galleries?

(see also: "BOSTON MFA SETTLES VAN DER NEER CASE" http://web.archive.org/web/20151016233930/http://www.artnet.com/magazineus/news/artnetnews/boston-mfa-settles-van-der-neer-case.asp 

and Double Comma Names )

Below are a few examples of :

Selected Christie's catalogue provenance references mentioning E. & A. Silberman Galleries