1 Dollar - Elizabeth II 3rd Portrait - Sir Charles Kingsford Smith - Small Head, Silver Proof

Issued to mark the 70th anniversary of Kingsford Smith's 1927 Southern Cross trans-Pacific flight — still one of the longest overwater routes attempted at the time — this proof was struck as a companion to the standard cupro-nickel dollar but in a limited silver edition. The "Small Head" designation distinguishes the obverse portrait variant used on Australian coins from roughly 1985 onward, an effigy that was itself replaced by a fourth portrait in 1999.