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Elliptical Perf Machins (page updated: Apr 21/20) Elliptical perfs began to appear in 1993. Some Machins exist with "regular" perfs and elliptical perfs while those new values/colours issued after 1993 exist only with elliptical perfs (any rare exceptions?). Issue dates shown reflect the first elliptical perf release of that value. See the specialized lists for additional varieties. Exists with and without elliptical perfs: 1p crimson (Jun 8/93) 2p dark green (Apr 11/95) 4p cobalt blue (Dec 14/93) 5p ash brown (red-brown) (Jun 8/93) 6p lime green (Apr 27/93) 10p light tan (Jun 8/93) 20p sea green (Dec 7/93) 25p salmon pink (Oct 26/93) 30p sage green (Jul 27/93) 35p old gold (Aug 17/93) 35p dark brown (Apr 1/04) 50p sand (Dec 14/93) 1st flame (Apr 6/93) 2nd light blue (Apr 6/93)