Lot 30641 – Proof overprint in black for the 4-line format of the

Proof overprint in black for the 4-line format of the high values: Lower right corner sheet marginal block of six, black overprint on medium whitish paper, with Type 2 backstamp in purple and initialled « B.J.B. », neatly mounted and expertly written up on album page, very fine and very scarce (6). Hibernian PR12; €1650+. Ex W. Fletcher.