Lot 65504 - Proof overprint in black for the 5-line format of the low Thom values: Single row of twelve cliches

Proof overprint in black for the 5-line format of the low Thom values: Single row of twelve cliches, on whitish paper, from showing a fine array of cliche varieties including positions 1 to 6 showing ''s'' of ''Rialtas over ''a'' of ''Sealadec'', 7 to 12 with ''s'' of ''Rialtas'' to left of ''a'' of ''Sealadec'', neatly mounted and expertly written up on album page, some creases and tone spot, very fine and very scarce (18). Hibernian PR13. Ex. Commander Graham, W.Fletcher.