antique Victorian vintage signed&framed print Sir Galahad/George Watts

Antique framed print under glass of the Arthurian knight Sir Galahad and his warhorse by George Frederic Watts (the Symbolist painter). The original painting was done about 1862 and George Frederic Watts dies in 1904. We're not sure of the exact vintage of this print, but judging by the frame and backing, we'd date it between about 1890 and 1920.

This measures about 24" 3 1/2" over the oak frame. The art portion of the print is about 10" x 19".

Under the picture it looks to be signed in pencil -Sir Galahad- on the right side and -By Watts- on the left. This print is professionally framed we haven't opened it to verify the markings. There also look to be some age and storage spots to the blank areas of the print.