The art is 17 inches tall and 18 inches wide not including the frame. I believe the material for the art is some type of paper of thin canvas, however I am unsure.
I have a work of art that is from an artist that I have not been able to fully identify. Their last name appears to be Sarde, however the first name is unclear with the signature. The signature is not from the artist, it is from my great-grandfather. My great-grandmother retrieved the work of art from Europe decades ago, and it has been passed down to me. The back of the frame indicates that either the frame or the work of art is from Portugal. If you could not only appraise the art, but identify the artist and the information on the back of the frame, that would be great.