Strange bubbles in silver quarter

I found this metal detecting today and I'm curious how these bubbles got in a solid silver coin. It looks like there are fractures on the surface of the bubbles. Weird. any thoughts?

This coin isn't terrible condition I can't even get a date off of it

 

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Looks to have been in a fire at one point.

 

She's rough

 

That's what a silver quarter looks like cooked by a blow torch! Heated until red hot and improperly cooled.

 

Just curious. Thanks for the reply. I'll just throw it in the jar with the rest of them

 

Looks like a silver-plated counterfeit. The corroding copper core is blistering through the silver plate.

 

I'd cut that one in half and check for solid silver.
Then into the scrap silver container.

 

Exposed to extreme heat so damaged

 

Where was it found? If in a large clearing, then most likely it was thrown, dropped, into a fire and allowed to heat to a high enough temperature to cause the damage. It reminds me of pictures of coins found after the Paradise fire in California.

 

Standing Liberty a la flambé..........

 

I found it between the street and sidewalk in Huntington West Virginia. Fairly Old Town

 

I find quite a bit of silver between Street and sidewalk

 

Isn't?
I think you meant to say is

 

Either heat or exposed to some type of construction equipment. We too find a lot in the grassy sidewalk patches...

 

Ooooh My!! What a crying shame.
@Derwood . Don't forget to hit the old parade routes and Town greens also. If you can.

 

The eagle looks like it's trying to find a way out of the fire, poor thing.

 

Agree with others, looks like heat and corrosion.

 

Always