We have a block of the 5d Swordfish that appears to be an unlisted perforation gauge.
Stanley Gibbons list under SG584 in Part 1 2001 edition the following:
The block measures perf 13½x13, see illustrations
While there is a footnote after SG590 saying there are variations in these perfs within the sheet, none of these is consistent with a vertical perf of 13. Is this something new or do the perfs just vary that much on this issue? Maybe an NZ specialist will know the answer.
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