This is an image of the Annnunciation and is to be found on the Reredos in the Lady Chapel; it is the left-hand panel. This is a beautiful altar - we think it is Italian - but have no physical evidence for this only the wisdom of those who know these things!
This Reredos has had has suffered some damage over the years; on this picture the lily that Gabriel is touching is no longer there. All the same it is a wonderful image and gives us something to think about during May.