Australian silver kookaburras come in four sizes:

•    1 ounce
•    2 ounces
•    10 ounces
•    35.5 ounces or the world’s largest one kilo bullions!

Similar to other Australian wildlife coins, the obverse of the Silver Australian Kookaburra coin bears the effigy of Queen Elizabeth II.

The first Australian Kookaburra coins were minted in 1990. It was released in the numismatic market in two kinds – the standard bullion issue and the proof coin.

The two Kookaburra coin varieties can be distinguished from each other through numerous factors. Some wildlife coin collectors still get confused among the two.

Consider these facts:

All Kookaburra coins are bullion and not meant for general circulation. Hence, a standard issue non-proof pure Silver Kookaburra coin remains in bright uncirculated condition because its owner will always keep it protected. Who would want scratches on his or her coin? The kookaburra coins are too beautiful to devalue!

Moreover, the non-proof BU Kookaburra coins have an uncommon “reverse proof-like” finish.  They have a frosted background or field, and shiny foreground or devices (the kookaburra imprint).
 
Kookaburra proof coins are minted in special dyes, polished, and acid-etched to give it a mirror finish on the background. The foreground will now have a frosted finish. Each Silver Kookaburra proof is accompanied with a certificate of authenticity.