1997-D Lincoln - Lines?

Stumbled upon this coin. Did a little searching and it appears both side have lines so it doesn't seem like it's caused from a machine. First one I've come across like this so I don't want to jump the gun and just say it's a mixture issue. Anyone know what would cause it?

I let it soak in acetone beforehand just to make sure it was actually part of the coin. Assuming worth all of 1 cent due to the fun it had in circulation, but still keeping it because it sure looks neat.

Thanks

 

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Need to think.. Copper Plated Zinc Cent

I see evidence of DDD - Die Deterioration Doubling on the Date which would be created from a worn die strike. The lines are Linear Plating Blisters.

Keep it.. It is neat

 

not an expert but looks common, these..yours and mine... are extream. just a guess

 

Ah. That helps a lot. I didn't realize the copper plating was 100% copper -- thought there was still a mixture involved. Happy to know the name of it. Came across blisters before (just a bunch of tiny bumps), but haven't seen the linear version until now.

Thanks again.

 

thx.s just starting this hobby but well into it. pennys most all filed for quick reference

 

Here is a great website if you haven't seen it yet - http://www.error-ref.com