Inscription
lower right, in brown ink: [4?] [cropped] ; VERSO OF TERTIARY/QUATERNARY SUPPORTS, center, in brown crayon: 227 / VIII [upside down] ; lower center, in graphite: 29/4/1931 Boerner No 8 / Eremitage from Count Kobenzl 1768 ; lower right, in graphite: Stefano della Be [cropped] ; lower right, in graphite: 35[1?]8. -