1999 Aust 1$ Coin With Stamped ... 4 ...near And Over The Date ?

yes thanks....JimmyD ....

i beleave that there are some other coins stamped with other

numbers to....? but what for ?

You'll probably never learn the reason. I've got a pile of these I've saved over the years.

thanks for the info every one ...

looks like it goes into my folder of odds...

thanks again

Maybe not PMD if it was $1, check the date as the RAM did 3 x $1 in 2019, each one stamped either A, U, or S, with 35 just under the big roos' belly.

They were to commemorate 35 yrs of the $1 coin. I don't get the significance of 35 years.

Check here https://www.ramint.gov.au/one-dollar

Oops, I got some of that back to front, the A,U & S are Under the large roo, the 35 are further up on the coin.

Here's an image to show you where to look, The arrow pointers and blue coloured circles were added by me.
$1 2019 AUS 35 IRB Duo