British North Borneo: Airmail labels

Here is another interesting item from non existing country anymore.

North Borneo was a British protectorate under the sovereign North Borneo Chartered Company from 1882 to 1946. After the war it became a crown colony of Great Britain from 1946 to 1963, known in this time as British North Borneo. It is located on the northeastern end of the island of Borneo. It is now the state of Sabah, East Malaysia. The last Governor of North Borneo was William Allmond Codrington Goode who held office from 1959 to 1963.

Year: 1.1936, Gummed. Günter Mair's catalogue no: - BNB-A-2, perforated 12 (irregular), sheets of
10(2x5), "BY AIR MAIL": 24mm, "PAR AVION": 26.5mm, black/light grey-blue, 4****