Dear Osvaldo,

Thank you for contacting Mearto with your appraisal inquiry.

The presented object appears to be a pencil drawing on paper with the measurements of 17 x 15 inches. The drawing depicts the portrait of a lady and was probably made in the middle of the 20th century. The drawing is titled Mrs. Vincent Astor which identifies the depicted person.
This piece is in good condition and there is no serious damage visible in the images provided.
A fair market estimation would be between 40 to 80 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,
Georg