Singapore: Airmail labels 2

Here are some older airmail labels from Singapore.

Year: approx.1965, Gummed. Günter Mair's catalogue no: - SGP-A-3, rouletted, sheets, black-grey or
dark violet-blue or dark grey-blue/white, 2**

Year: approx.1970, Gummed. Günter Mair's catalogue no: - SGP-A-4, rouletted, sheets of 64(4x16),
black-blue or dark violet-blue or violet-blue or grey-violet/yellow, reverse: white, 1*

Year: approx.1975, Gummed. Günter Mair's catalogue no: - SGP-A-5, rouletted, sheets, black-grey or
dark grey-violet/yellow or light yellow/white, 1*

Year: approx.1985, Self-adhesive, Günter Mair's catalogue no: - SGP-A-7, imperforated, dark blue/blue
or light blue/white, 1*

And here Express label