What it does
This instrument, the Currency (Royal Australian Mint) Determination 2008 (No. 10), is a legislative instrument made by the Minister for Superannuation and Corporate Law, NICK SHERRY, under subsection 13A(1) of the Currency Act 1965 (preamble). Mechanically, it prescribes the physical specifications for two particular coins by listing their denomination, composition, weights and allowable variations, maximum dimensions, shape, edge treatment and detailed obverse and reverse designs in Schedule 1 (s 3; Schedule 1). The Determination comes into force the day after it is registered (s 2) and is dated 19 December 2008 (preamble).
The instrument does two concrete things. First, it fixes technical specifications for a $1 coin (Item 1 in Schedule 1) and a $5 coin (Item 2 in Schedule 1). Those specifications include minimum precious‑metal content (each coin’s “standard composition” is “Not less than 99.9% silver”), precise weights and permitted tolerances (for example the $1 coin: 31.635 g ± 0.500 g; the $5 coin: 36.31 g ± 0.54 g), maximum diameters and maximum thickness (each coin’s maximum thickness is 3.50 mm), and edge and shape requirements (both “circular” with “continuously milled” edges) (Schedule 1, Items 1 and 2). Second, it specifies detailed artistic and stamping requirements for both faces of each coin, including gold‑plated replicas of the 1852 Adelaide Assay Office gold ingot on one face of the $1 coin “plated with not less than 99.99% gold”, an effigy of Queen Elizabeth II with monogram “IRB”, holographic imagery on the $5 coin reverse (three angle‑dependent images), inscriptions, map coordinates and a die number (Schedule 1).
The Determination also contains an express non‑derogation clause: the specifications in Schedule 1 “do not affect any other determination of the specifications of a coin” (s 4). The instrument is registered as a legislative instrument and the note refers readers to the Federal Register of Legislative Instruments for registration information (note following Schedule 1; see Legislative Instruments Act 2003 reference).