Dear Michael,

Thank you for contacting Mearto with your appraisal inquiry.

The presented object appears to be a charcoal drawing on paper with 19 1/2 x 25 1/2 inches measurements. The drawing depicts a portrait of a woman in front. This artwork is signed in the upper right corner by Robert DE NIRO (1922-1993) and dated (19)66.
Comparable objects were recently offered and sold on the international auction market.
This piece is in good condition and no severe damage is visible in the images provided.
A fair market estimation would be between 1.800 to 2.500 USD.
This estimate is based on actual recent past recorded auction sales of comparable items. Retail "asking prices" can be higher and may vary.

With kind regards,
Gregory