Gene Murray vintage lithograph Framed limited edition print

Limited edition lithograph print by wildlife artist Gene Murray. 770/1500. Of an original India ink and pen drawing. Beautifully framed with double matted in a medium brown with dark brown. Wood frame with metal corners, I believe it's brass (not magnetic). The print shows a proud black Labrador retriever with a mallard and wood duck . The frame measures 27 1/4" H X 23 1/4" L X 1 1/4" D. Good condition. The wood frame has a few small dings, mostly on the top edge. The metal corners are tarnished . No date anywhere that I can find but most likely 1980's. The artist died in 1992. I ship same or next business day.