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Machins with Perforation Changes (page updated: Apr 14/02) These perforation changes only affect the small-size Machins. The vast majority of Machins are perf 15x14. Here are the small-size Machins that also come with another perforation... Perf 12 3/4 x 13 1st flame Perf 13½ x 14 (Questa and Waddington) or 13 3/4 x 14 (Walsall). Perf variety on regular issues 2p deep grey-green 4p turquoise 5p greyish rose 5p greyish violet 10p light tan 19p olive green 20p purplish grey 43p dark brown 75p india black 1st flame 2nd light blue Anniversary: 15p bright blue 20p black Perf variety found only on Northern Ireland and Wales stamp: 12½p pastel green 14p smoke blue 16p mushroom Perf variety found only on Scotland and Wales stamp: 24p rust   Variety only on Scotland stamp: 12p emerald green 17p blue grey 22p moss green 28p slate blue 31p deep lilac 39p amethyst Perf variety found only on all 3 regionals (Northern Ireland, Scotland, Wales): 18p light green 20p light green 26p post office red 26p rust 28p greyish violet All 3 regionals (NI, Scotland, Wales) where the only perforation is 13½x14: 11½p drab 15½p pale violet 18p greyish violet 22p dark blue Scotland where the only perforation is 13½x14: 12½p pastel green