King Edward VII: 1911 Harrison perf. 14 1/2d. deep bright yellow-green, marginal block of four, fine unmounted mint. Hendon certificate (2022). S.G. Spec M3 var. Unlisted in the Hendon catalogue but very bright yellow-green retails at £495. Photo. (Image1)

King Edward VII: 1911 Harrison perf. 14 1/2d. to 4d. set with most listed shades less 1d. aniline pink but incl. 1d. no watermark and 1/2d. St Andrew’s Cross, perf. 15 x 14 1/2d. to 4d. unmounted mint with shades, mainly fine. (23) Cat. £900+. (Image1)

King Edward VII: 1911 Harrison perf. 14 1d. deep rose-carmine (within the shade band), in an unmounted mint control “A 11” pair, minor gum wrinkles, otherwise fine. Brandon certificate (1997). S.G. Spec. M6/6. Photo. (Image1)

King Edward VII: 1911 Harrison perf. 14 1d. pale rose-red marginal block of four, unmounted mint, fine. Hendon certificate (2022). S.G. M6 var. Hendon retail £980. Photo. (Image1)

King Edward VII: 1911 Harrison perf. 14 1d. aniline rose, in an unmounted mint complete sheet of 240, four with ink marks on gum, some creasing, folded into four. A rare and valuable full sheet. R.P.S. certificate (2008). S.G. Spec. M6 (7), cat. £72,000 as singles. Photo. (Image1)

King Edward VII: 1911 Harrison perf. 14 1d. deep carmine red, corner “A11” strip of three, unmounted mint (hinged in selvedge), fine. Hendon certificate (2022). S.G. Spec. M6 var. Hendon retail £1,320. Photo. (Image1)

King Edward VII: 1911 Harrison perf. 15 x 14 1/2d. deep bluish green corner block of six, mint, fine. Hendon certificate (2022). S.G. M4 var. Not listed in the Hendon catalogue but bluish green retails at £570. Photo. (Image1)

King Edward VII: 1911 Harrison perf. 15 x 14 1d. rose-red, double gum, marginal block of six, unmounted mint, a few gum wrinkles, otherwise fine. Copy of Hendon certificate (2019) for a block of twelve. S.G. M7(1) var. Hendon retail £570. Photo. (Image1)

King Edward VII: 1911 Harrison perf. 15 x 14 1d. carmine control A11 block of six, mint with five stamps unmounted, fine. S.G. M7(7), cat. £1,200. Photo. (Image1)

King Edward VII: 1911 Harrison perf. 15 x 14 21/2d. true blue, marginal block of four, fine mint. Hendon certificate (2022). S.G. Spec. M18. Hendon retail £1,500. Photo. (Image1)