1897: Imperial Eagle 20 pf. ultramarine, overprinted "Kamerun" in
black, diagonally bisected, for the steamer Valdivia, used on a
postcard
1897: Imperial Eagle 20 pf. ultramarine, overprinted "Kamerun" in
black, diagonally bisected, for the steamer Valdivia, used on a
postcard to Mannheim, Germany, dated 3 October 1898, tied by a
circular datestamp "KAMERUN" in black, with arrival "MANNHEIM"
bridge type circular. Small corner fault lower right and hinge
remains to back. Nonetheless an extremely rare usage Mi = €20'000.
Cert. BPA (1986). Provenance: Christie's Robson Lowe, Zurich, 16
April 1985, lot 496
