Both copies of the book look identical with the same publisher/printing details on the back of the title page. Only the dust wrappers are different. The copy with the grey DW cost 10/6 and has the additional publisher name Allen and Unwin Ltd on the spine whereas the green copy states "first cheap edition" 6s and has the publisher Benn on the spine.
Oh Poo !!! I got a 'cheap' one !!! And it's ex-libris too !!!
"Beside the water I discovered (or maybe rediscovered) the quiet. The sort of quiet that allows one to be woven into the tapestry of nature instead of merely standing next to it." Estaban.