Dear Jesus,

Thank you for contacting Mearto with your appraisal inquiry again and for your trust in our service.

The presented object appears to be a painting made in oil or acrylic paint on onyx with 9 1/2 x 13 3/4 inches measurements. The painting depicts a native american chief and is signed with the name "Segovia". It was made in the second half of the 20th century.
Sadly no additional information for an artist fitting in style and motif is given by reference books and databases.

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 150 to 300 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