Ascension 1922 KGV 2d Line Through "P" of "Postage", Superb M

1922 KGV 2d LINE THROUGH "P" OF "POSTAGE" (SG 4a). Superb M example of this variety which occurred in position r3/6. Lovely fresh stamp with lightest trace of prior mount, variety clearly apparent. Scarce. (cv£500). See additional image below.