Auction 333-341 Nigeria, Cameroon, Sudan & Worldwide Postal History - Day 4

1883: Postal Stationery Card, 1½ d. red-brown, unused, with manuscript "Specimen" overprint in black diagonally to front, very minor spotting, otherwise very fine. Rare; one of three archival specimens recorded. Cert. RPSL (2009) which states; "possibly ex De La Rue archives."
Reference: The Postal Stationery of Nigeria, by Peter Hørlyck, illustrated on pg. 369.
Provenance: Stanley Gibbons Auctions, 20-21 March 1997, lot 451; Stanley Gibbons, 24 March 1999, lot 436 (unsold); offered again 13-14 October 1999, lot 1664.