Hi Mardi,

Thank you for contacting Mearto with your appraisal inquiry.
This is a fairly common coin; there were 52.6 million minted. There are many available on eBay for between $1-5 dollars.
Based on the photos and information provided, and subject to examination, this is:

A vintage Australian Queen Elizabeth II copper-nickel 5-cent coin
designed by Raphael David Maklouf and Stuart Devlin, minted in 1992
one side depicting the crowned bust of Queen Elizabeth II, facing right (her effigy known as the "Third Portrait"); she is wearing the royal diadem which she wears on her way to and from the State Opening of Parliament, a pearl necklace and earrings. Incuse in tiny letters on the neck truncation, the designer's initials RDM (for Raphael David Maklouf).
The reverse showing an echidna (also known as a spiny ant-eater) seen from below as it rolls into a protective ball. The denomination numeral 5 cents is above the lower half of the animal; the artist's initials SD (for Stuart Devlin) are below the numeral in (very) tiny letters.
(DIMENSIONS)
CONDITION: mildly corroded
$4-6*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, and thank you again for using Mearto.