Lot 60728 – Proof overprint in black for the 5-line format of the

Proof overprint in black for the 5-line format of the low values: Right sheet marginal block of twelve of Stereo Setting 1 with Type 2 backstamp in violet and initialled « B.J.B. », on thick whitish paper, showing flat tail to « 9 » of « 1922 » cliché variety, neatly mounted and expertly written up on album page, very fine (12). Hibernian PR4a; €840+.