Netherlands: K.L.M airmail labels 2

Here is another lot of airmail labels from K.L.M.

Year: 1937, Gummed. Günter Mair's catalogue no: - NEL-B-17, rouletted H and VL, booklets with 10

strips of 5, issued for customers in Duth East Indies, Duth Guyana (Suriname) and Curacao, 

red/blue/white, 3***

Year: 1961, Gummed. Günter Mair's catalogue no: - NEL-B-28, rouletted,sheets, orange or red/blue/white,

3***

Year: approx.1962, Gummed. Günter Mair's catalogue no: - NEL-B-29, rouletted, sheets, red/blue/white,

3***