Norway: Full sheets of airmail labels

Here are some nice and mint full sheets of old Norwegian airmail labels. 20 labels per sheet (10x2).

Year: 1931, Gummed. Günter Mair's catalogue no: - NOR-A-4, perforated 11 ½ , sheets of 20(2x10), 
black/blue, 4****

NOR-A-4

Year: 1931, Gummed. Günter Mair's catalogue no: - NOR-A-5, perforated 11 ½ , sheets of 20(2x10), 
black/blue, NOR-A-4/5 come together on same sheet, 4****.

NOR-A-5

 Year: 1932, Gummed. Günter Mair's catalogue no: - NOR-A-6, perforated H 10 ¾ , V 11 ¼ , sheets of 20(2x10), ref.: "Bl.nr.341.", black/blue, 4****

Year: 5.1934, Gummed. Günter Mair's catalogue no: - NOR-A-7a, perforated H 11 ½ , V 11 , sheets of 20(2x10), ref.: "Bl.nr.341.", label in lower left position with date "5-34". Further dates are: 4-35, 6-36, 3-37, 7-39, black/blue, 4****

5-34

4-35

Year: approx.1936, Gummed. Günter Mair's catalogue no: - NOR-A-8, perforated H 11 ½ , V 11 ¼ , sheets of 20(2x10), ref.: "Bl.nr.341.", "PAR AVION": 17mm, "P" modified, black/blue, 4****