Study of a horse
Attributed to

Alessandro Allori

 Study of a horse
Virgin Mary reading to the infant Christ (recto)

Vittore Carpaccio

 Virgin Mary reading to the infant Christ (recto) (circa) 1485-1495
Saint Christopher (recto)

Netherlands

 Saint Christopher (recto) 1530-1540
Scholar seated at a table on which rests a large book
Attributed to

Govaert Flinck

 Scholar seated at a table on which rests a large book 1638-1640
Three studies of female figures

Jean-Antoine Watteau

 Three studies of female figures (circa) 1716 - 1718
Seated female saint
Workshop of

Hugo van der Goes

 Seated female saint (circa) 1475 - 1485
Copy of the child from Rubens's 'La Vierge au Perroquet'

Eugène Delacroix

 Copy of the child from Rubens's 'La Vierge au Perroquet' 1800 - 1899
Landscape with trees and buildings (recto)

Claude Lorrain

 Landscape with trees and buildings (recto) (circa) 1640 - 1646
Female nude

Georges Seurat

 Female nude (circa) 1879 - 1881
Last Judgment (recto)

Italy 16th century

 Last Judgment (recto) 1500 - 1599
Antique crater, frieze and sepulchral cippus

Battista Franco

 Antique crater, frieze and sepulchral cippus
Studies after Roman bas-reliefs

Nicolas Poussin

 Studies after Roman bas-reliefs 1635 - 1640
Study of an antique statue - Mercury attaching his sandal
Formerly attributed to

Jean-Antoine Watteau

 Study of an antique statue - Mercury attaching his sandal (circa) 1730
Skull and head of a bearded vulture

John Ruskin

 Skull and head of a bearded vulture 1874
Skull of an ibis

John Ruskin

 Skull of an ibis 1874