Here are an airline issue labels from N.A.C. (New Zealand National Airways Corporation)
National Airways Corporation was the national domestic airline of New Zealand from 1947 until 1978 when it amalgamated with New Zealand's international airline, Air New Zealand. The airline was headquartered in Wellington. Today it exists as a 'paper' airline "Air New Zealand National" to manage that airline's domestic jet fleet. (Wikipedia).
Year: 1950, Günter Mair's catalogue no: - NZL-B-1b, rouletted, sheets of 160(10x16), Blue or Grey-blue or dark violet-blue/White, 3***
Year: 1956, Günter Mair's catalogue no: - NZL-B-2, perforated 12, stamp booklets with 1 sheet of 6(2x3), issued in cooperaton with N.Z. Post, further dates are: 1957,1959. Blue or bright blue/White, 4****
Year: May 1960, Günter Mair's catalogue no: - NZL-B-3, rouletted, sheets of 80(5x16), Blue or grey-blue/White, 3***
Year: March 1967, Shiny gum, Günter Mair's catalogue no: - NZL-B-4a, rouletted, sheets of 90(6x15),
Size: 44.5x12.5mm , Orange-red/Blue or dark blue/White, 3***