Dear Camillus,

Thank you for contacting Mearto with your appraisal inquiry.

The presented object appears to be a lithograph print on paper with the measurements of 11 x 13.5 inches. The print depicts a bird and comes from a collection or series of different ornithological prints. The print appears to be signed by Johannes Gerardus KEULEMANS (1842-1912). Sadly I doubt that this is a hand-colored lithograph. This detail is very hard to judge just on the base of images.
This piece is in good condition and there are no serious damages visible.
An estimation would be between 50 to 100 USD.
This estimation is based on actual recent past recorded auction sales of comparables. Retail "asking prices" can be higher and vary.

With kind regards,
Georg