Great Britain 1911 £1 deep green, SG320Great Britain 1911 1 deep green, SG320. A superb unused, unmounted mint with full original gum, top marginal example printed at Somerset House. A scarce and ever popular King Edward VII stamp, rarely seen in positional form in such pristine unmounted mint condition. This most distinctive and memorable stamp design caused controversy at the time because of its unusual shape and size. It is now argued by some as being the most attractive definitive