This is a signed original oil painting by Peter Ellenshaw (British/American, 1913-2007). The painting features a moonlit seashore scene with the surf breaking along rocks. It is signed on the lower left corner and seems to be dated for 1967. Ellenshaw was a matte designer and special effects creator who worked on many Disney features including Treasure Island, and Mary Poppins.
The frame is 36 x 22 1/2" with a sight view of 29 1/4 x 15 1/4". The stretcher is 30 x 16".