I need help finding the value of my commemorative coin...?

Question

I have a bronze commemorative coin from when Prince Charles and Princess Diana visited my school in Australia. There are maybe 100 in existance and I would like info on it's value.

Front side reads: "Portland Proclaimed a City On Monday 28 October 1985" (with a seal of the city).

Back side reads: "Commemorating A Visit to The City of Portland By Their Royal Highnesses The Prince and Princess of Wales On Monday 28 October 1985"

Any information is welcome.

Answer 1

It's pretty rare, so coin companies do not price them. However, there is a similar coin that comes out to $40.  Your coin isn't meant to have any money value, but it's for you to remember when these two visited your school.