The first one is a normal sergeant or staff sergeant (latter with crown) set of chevrons for general duty dress (greens), certainly from the early 1960s right up into the 1990s when Austcam became the standard general duty dress.
L1A1 is correct about the WRAAC use for the remainder, I'm sure the gold/silver ones were worn on the green winter jacket, the light green ones on the shirt. Probably same period as above.
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