Help with kookaburra damage

Hi folks, I'm brand new to this, bought a few 1 oz silver kookaburras off ebay.

one of them, a 1990 shows some two small areas near the edges that has issues, can you have a look and see if you have an idea what it is? Not sure if it's damage to the surface or something on the coin. Not sure if I try and do something to it or just leave it.

 

seems like that is just toning so leave it as it is.it proves it is silver

 

Thanks

 

It looks more like peeling or flaking to me, which of course it should not do. I have 1990 kookaburras with toning and it looks nothing like this.

If you are near a coin shop with a XRF machine, I would take it in and get it tested. Does not look right to me.

Edit: Here is Bullion Now talking about their machine.

 

Could this be a coin lamination error?

 

I have the same issue with the kook in the 1990 family set. It has a slight peel just like the OP. It's tested and fine.
Just an issue with the mint process I guess

 

Several of my 1990s kookaburra coins (1oz and 2oz) also have this type of problem. I am unsure of the reason.

 

Do not try to clean it as its normal with silver .

 

There's an app called Bullion Test on Android which you can use to determine authenticity of your kooks by the "ding" they make. I don't know if kooks are included in the free version though.