silver coin problem

[jonboy]

I recently found a silver quarter and one side is completely covered in concrete. Is there a safe way to remove this??

 

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[Dozer D]

What condition is the qtr? If it's not worth saving as a collection piece, then just try dropping it on concrete floor a few times, or take a rubber hammer to it a little at a time.
Are you sure it's concrete, or a glue.

 

[Tpmetal]

concrete breaks down in heat long before silver melts I think. Look it up on google quick and hit it with a torch if I'm correct. should pop it off or turn it too dust. This is all of course if its not a good quarter. even if it is not sure it would hurt it too much as long as you don't get it too hot.

 

[TheCoinKid]

Similar to Tpmetal's suggestion, I've had similar luck with hot water from the sink. Would try that anyway before I got too radical.

TCK

 

[xr7ator]

Along the lines above, freeze it then hit it with hot water or heat and it might pop right off.

Pics or it didn't happen })

 

[A2coins]

Good idea heat it freeze ot I would think it would come off

 

[Zhar]

You can try :
- rubber
- vinegar
- white stone

Do you get a photo to see the coin ?

 

[Inspector Comet]

You can try :
- rubber
- vinegar
- white stone

I would not recommend Vinegar... I think cycling hot / cold is going to be your best bet as well.

Silver expands and contracts with temperature about 50% more than concrete, so if you freeze it, heat it, freeze it, heat it... The concrete should begin to break up and break away from the silver. If it were me, I'd stay away from anything that could damage the coin. In my mind that means no solvents or acids (ie vinegar), and no blow torches. I'd use a more controlled heat source like an oven or steam cooker.

Hope it all works out! I would second the general request for images to help us help you...

 

[Inspector Comet]

I also just realized, my guess is that everyone here is under the same assumption: You have a coin with a little concrete on it, but can more or less hold the coin plus concrete in your hand. If you have a coin that has been half set into a large block of concrete, then I guess... jackhammer? Anyway, in the event that we are talking about a larger piece of concrete, that would be a good point to add. If not, refer to above posts