Beschreibung
von Hungen, E./ Menuz, W., Surcharged Registration Envelopes of British Central Africa, Beitrag in The London Philatelist, Number 1434, April 2016 #72660
von Hungen, E./ Menuz, W., Surcharged Registration Envelopes of British Central Africa, Beitrag in The London Philatelist, Number 1434, April 2016 #72660
