The $1 coin in the set features a slice of Vegemite toast, with the Vegemite in vivid, true-to-life colour, to commemorate the spread's 100th anniversary.

And on the flip side is the head of the late Queen Elizabeth II.

It's a collector's first and probably final chance to get these Australian and British icons together on the same coin.

John Stanley chats with Matt Thompson, coin expert and Director of Thompson Coins and Collectables, about this rare coin set.