Old man and the sea

This was a wedding gift to my great granmother in the early 1920's.  It has pass through the family ( it sustained water damage at grandmothers and finally passed to my mom.   We dont know anything about it.   I believe its in the orignal frame.    I have not opened the back but looking through the frame it has been cut off to fit the frame and there is no signature.    I have never had it appraised or know nothing else about it.   We would like to know artist, is a watercolor, print?  origin.   were not trying to sell it but if it has any value because of the water stain.   Its has always been a favorite picture.    Thank you