Making the Queen Mum more presentable

It's not a valuable coin by any stretch of the imagination, but I found it CRH'ing and I'd like to make it more presentable.

Is there anything that can be done? Brass-wire Dremel tip? Soak in some magical liquid (ketchup, vinegar, etc.)?

 

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can you see what year it is ? 1960 ? 1950 ?

 

Pretty sure it's 1980, but I don't have it with me...

Edit: after Googling it, I think the 50 cent piece was introduced in Australia in 1966.

reference

Looks like it is copper-nickel...

https://en.numista.com/catalogue/pieces904.html

 

Somewhere near the four o'clock position on the portrait side (technically the Queen is also a Queen Mum but they do not use that name this way ...) it does say 1980, yes. Don't think much can be done to make this piece look good again

Christian

 

Start with some lemon juice or vinegar for a few hours and see what happens.

 

QEII would only be the Queen Mum if Charles was king already. Hopefully that will be a long time off - Vivat Regina!