Unrecognized copies

One of the things I find amusing is to find copies after more or less famous paintings, which haven't been recognised (or at least haven't been mentioned) by the auction house. Because they don't know? Because they think an "original" painting will fetch more than a copy? Because they don't have the time? Who knows...

This painting is being auctioned at Babuino as "Flemish painter, 19th century". Both may be correct, certainly the age, but it actually is a reversed and Classicism-ified copy of "The Child Christ Sleeping on the Cross", for whom the original painter is hard to find. I have seen it attributed to Guido Reni (at a Dorotheum sale), Francesco Albani (Bonham's), and Cristofano Allori. The painting has been copied quite regularly, but rarely in reverse. No estimate at the auction house, and I would be surprised if it went for more than a couple of hundred Euro.

The source for the reversal may be this engraving.