From EBay:
DESCRIPTION
A fine detailed depiction of a British aeroplane bomber, possibly the Vickers Wellington monogrammed to the lower right with the letters W.A.G., as shown. The artist has portrayed fine detail in the plane, as well as the landscape below. Signed with monogram......,
......Includes a Certificate of Authenticity
How is a certificate possible when it is not clear who the artist is??
SLB