Los-Nr. 6811

1891, Unpaid letter sent from Cameroon (German Protectorate) to Stockholm. The single rate from Sweden was 40 öre and the unpaid rate 60 öre. The letter was sent via the UK and upon arrival in Liverpool is was mistakenly stamped "6d" (This stamp is very rare) but then cancelled, marked "T" instead and sent further to Sweden. In Stockholm the letter was treated as if originating from the UK and was charged only 40 öre postage due instead of the correct 60 öre valid for an unpaid letter from Cameroon. Letters from Cameroon are very rare.