Dear Jose,

Thank you for contacting Mearto with your appraisal inquiry.

The presented object appears to be a screen print on paper with unknown measurements. The print has the title "The World is on Hard" and depicts a surrealistic motif. The print is not clearly readable signed and the signature could be interpreted as "J L Covling". 
Sadly no additional information for an artist with this name 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 there is no serious damage visible in the images provided.
A fair market estimation would be between 50 to 100 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, 

George