VTG 1978 Roger Mason Framed Print Individually Watercolored Train Engine‎ RARE

Vingtage 1978 Roger Mason Framed Print Individually Hand-Watercolored by artist. Signed and dated. Features Train Engine. As stated on the back on the piece, each ink print is individually hand watercolored so each is unique. The train engine appears to be rare as there have been none sold on this platform in the last 3 years and I cannot find a google image of it while a number of his other prints are more common.