Complex sentence: In 1999, the obverse of all new $1 coins was changed with the addition of Ian Rank-Broadley's portrait of Queen Elizabeth II, and the legend was rearranged to read "NEW ZEALAND ELIZABETH II (year of minting)".
Split into simpler sentences: In 1999, the obverse of all new $1 cois was changed. The new obverse depicted Ian Rank-Broadley's portrait of Queen Elizabeth II, and the legend was rearranged to read "NEW ZEALAND ELIZABETH II (year of minting)".