1977 D Rosie, very odd bump

Not sure what is going on with this, though maybe a glob of solider but you can see the strike in it
and no damage on the reverse to have pushed it up??
Thoughts

 

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Heat maybe?

Chris

 

That's kinda what I was thinkn by the color, but could they have gotten that one spot hot enough and not deform the back as well? And
Thanks for the input!

 

I don't know! Since it's a clad coin, I was thinking that heat subjected to the obverse may have caused the clad layer to buckle. Maybe someone else has a better idea.

Chris

 

Heat will do that to a clad coin for sure. Some type of impurity in the copper will expand and make a bump. Blew out a clad quarter with bumps on both sides.

 

Heat is the only correct answer.. Not an error coin

 

I'm. Still learning that's for sure but I get what you mean now. Preeshait the patience and input.

 

And Alurid, what were you doing to cause the blow out of the quarter?

 

Heating it with a torch of course!

 

, lol, of course... Roflmao!
I know some newbe has found a few of my heated pennies from being young.

 

I figure, how you gonna know if you don't try it.

 

I had to literally be breaking out the touch and soldering iron as you typed!

 

maybe someone testing one of these...