1912 Australian Bronze George .V. Penny- Its in Mint condition- I've researched the value, but I would like to be positve of its Authenticity-, & Where should I go to do that?
Welcome to Treasure Net from the Left Coast !!
The cost to have a professional authentic your coin would be greater than its value.
For my money, go with "sagittarius' " (free) opinion unless you suspect a much higher value for some reason.
Don.....
look at the crown and the beard...do you see the wear?....when grading commonwealth or BE coins the key is the detail in the royals portrait. Your coin was minted from 1911 to 1936 i believe.