Belgian Congo: Airmail labels 3

Here few more missing label from Belgian Congo.

Year: 1933, Gummed. Günter Mair's catalogue no: - BCO-A-2a, perforated 11, sheets of 100(10x10), frame: 47x12mm, dark violet-blue or dark blue/white, 4****

dark violet-blue

dark blue

Year: 1946, Gummed. Günter Mair's catalogue no: - BCO-A-4, perforated 10, sheets of 100(10x10), frame: 47x13mm, lettering modified, dark blue/white, 3***