Greece: H.E.E.S airmail labels 2

Here is another airmail label from  H.E.E.S

Year: 21.6.1933, Gummed. Günter Mair's catalogue no: - GRC-B-2, perforated 11 ½ , sheets of 24(2x12) dark blue/white, "Ω" modified, 5*****

Year: 21.6.1933, Gummed. Günter Mair's catalogue no: - GRC-B-3, perforated 11 ½ , sheets of 14(2x7) dark blue/white, 5*****

Same as above but imperforated and not listed in a Mair's catalog!

Year: 20.6.1934, Gummed. Günter Mair's catalogue no: - GRC-B-5, perforated 11 ½ , sheets of 
34(2x17), orange-red/white, 5*****