The same day I went to Sotheby's I also went to a pretty similar showing of auction items at Christie's. Here are a few highlights...
La Bergere, Charles-Amable Lenoir
A River Landscape, Peder Mork Monsted, 1897
I was particularly impressed by the Monsted landscapes I saw that day, though I had not heard of him before then. There was a particularly impressive one called A Wooded River Landscape, Deer Grazing in the Distance
at the Sotheby's auction tht was similar to this, but which was impossible for me to scan because of how it was printed in the catalog (it spanned the spine of the book). He was definitely an under-appreciated genius!
Portrait of a Young Beauty, Alexei Alejewitch Harlamoff
A Fairy Under Starry Skies, Luis Ricardo Falero
The Angel, Theodore Chaisseriau, c1840