Western Australia 1898 Swan 2½d De La Rue Imprimatur Pair

1898-1907 Swan 2½d De La Rue IMPERF IMPRIMATUR PAIR in BLUE taken on gummed Crown WA watermarked paper. Superb M, lower marginal, fresh, lovely appearance, see scan. Scarce. From the De La Rue archive imprimatur sheet (of 120) disseminated circa 1976. See additional image below.