Colombia: SCADTA airlines airmail labels 2

Here are more airmail labels from Colombia - SCADTA airlines.

Year: 1930, Gummed. Günter Mair's catalogue no: - CLM-B-10a, perforated 11 ¼ , sheets of 20(4x5)
dark green/white, 5*****    

Year: 1928, Gummed. Günter Mair's catalogue no: - CLM-B-8a, perforated 11 ¼ , sheets of 20(4x5)
dark green/white, 5*****

Year: 1934, Gummed. Günter Mair's catalogue no: - CLM-B-17, perforated 11 ¼ , sheets of 25(5x5)
"&" modified, issued in cooperation with Pan American Airways, ultramarine/white, 5***** 

Year: 1932, Gummed. Günter Mair's catalogue no: - CLM-B-14a, perforated 11 ¼ , sheets of 25(5x5)
dark green/white, 5*****

Year: 1932, Gummed. Günter Mair's catalogue no: - CLM-B-14b, perforated 11 ¼ , sheets of 25(5x5)
Grey-green/white, 5*****