The 1933 stamp issue marked the Centenary of the Abolition of Slavery and of the death of William Wilberforce
Very rare as only 10 sets were released
Malta 1973-76 4m 'History'
A scarce Government Official stamp in this quality of condition
think this covers your questions
Ceylon Victoria proof silver (rather than copper) Five cents, 1891 King Edward VII stamps The 1933 stamp issue markedCeylon Victoria proof silver (rather than copper) Five cents, 1891. Victoria, 1839 1901. Silver Five Cents, Proof, Off metal strike 1891 Obv. Bust left, Greek key design border, VICTORIA QUEEN. Rev. Date Palm, CEYLON FIVE CENTS 1891 Ceylonese legend either side of tree. Uncirculated, possibly lightly cleaned in antiquity but now toned to an attractive grey silver colour. 34. 5mm. 0. 01881kg Ref: KM 93a. Very rare coin splendid silver proof example of