Ripple effect in field

[Guest]

I am finding a rippling effect in the fields on the 2000,2001 ,2002 Lincoln pennies Can some one tell me what causes this..
Also on the same years and later coin. I am finding a bubbling effect on these pennies I thought at first it was a die break , but there a quite a few of these
in my coins ---- Any help would be appreciated .

[jallengomez]

Maruawe,

While photos are going to be necessary to tell you for sure, it sounds like you are describing plating bubbles and other plating issues. Very common on zinc plated cents.

[coop]

Could be gas bubble under the plating? But images would help.

[jcuve]

As noted, plating blisters - very common. They appear during the strike from the heat and pressure.

[DoubleYou]

"Ripple effect" in steps could also be trails. Don't throw it out till you know for sure!

[jfines69]

I agree with the pros!!!

[maruawe]

It is hard for me to tell the difference between a die break and some of these plating faults Is there a proven way to do that

[Maineman750]

It is hard for me to tell the difference between a die break and some of these plating faults Is there a proven way to do that

Pictures and experience

[maruawe]

right now I have neither But will keep trying to get the microscope to where I can get close up of these lines -- stick around I will find a way and I am getting hands on experience with this..