Finds from the last two days - strange bubbled half

[JT10]

I stopped at a bunch of banks Wednesday and Thursday looking for CWRs. I picked up $710 in halves, $300 in dimes and $300 in nickels. I found six 40%ers and a strange 1971 with a bubble on the face. I also found two 1964 dimes and three war nickels.

Sorry about the picture quality - I took them on my cell phone. The last photo is my coins in jars ready to go to the one bank that I know of with a coin counter in my area.

 

[Bigheed]

interesting, I am curious to know as well, I have one with a bubble the size of a pea, not as huge as yours.

 

[namster]

I am told this happens when a coin is heated.

 

[That Canadian Guy]

I bet someone did some saudering (however you spell it) to that coin.

 

[postvmvs]

Did you weigh the bubbled half? If the weight is normal it could have been exposed to high enough temperatures to melt the copper center, but not the copper-nickel?