used  ½a. blue Die I, a horizontal pair with good to large margins, both clearly cancelled "B/147", fine. S.G. Z20, £550. Photo
used ½a. blue Die I, a horizontal pair with good to large margins, both clearly cancelled "B/147", fine. S.G. Z20, £550. Photo

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used ½a. blue Die I, a horizontal pair with good to large margins, both clearly cancelled "B/147", fine. S.G. Z20, £550. Photo