unused 1913 1st. watermark, 6d. ultramarine, a lower right corner example showing retouched "E" (upper plate, right pane R10/6), fine mint. A very clear example which occured on this distinct colour of the first printing only, prior to being corrected. B.P.A. Certificate (2000) states "...colour faded" which we consider incorrect. S.G. 9a, £1500. Photo