Attached is a photo of a 2008 P LMC. It looks like wavy steps. I'd like some feedback because this is the first potential example I have seen. Thanks.
Looks like struck through grease, weak strike, or circulation. In the future, showing photos of both sides of the whole coin would be helpful for us to give you a more precise answer.
Thanks for the feedback. It came straight out of a mint set just today. I'll remember your advice in the future.
There are two types of die abrasion: field abrasion and device abrasion. “Field abrasion will lower the field in relation to the die’s incuse elements, and therefore that die will create coins that have thinner-than-normal, or even missing devices, such as “No FGs”, “Floating Roofs”, and “Absent Abes”.” “Trails, on the other hand, are the result of device abrasion. This abrasion inside a die’s incuse elements will create the opposite effect, enlarging and distorting the devices. This is commonly seen with trail dies, and when that abrasion is extended beyond the device, trails are formed.” – Will Brooks, Coin World Weekly, July 17, 2017 Wavy Steps are a form of Die Trails. You might check http://www.traildies.com/ I cannot distinguish Wavy Steps on your coin (perhaps because of reflection. Here is one I found some years ago: Wavy steps were first thought to be doubled dies and later shown to be trail dies. This one was listed as 1995P-1DR-001. It is now listed as a Trail Die: 1995P-1DER-005WS 180°. This is a major trail die, one of the few which show column extensions below the columns.
I thought it was unusual because it has the Satin Finish of the Mint Sets of 2005 - 2010. Most of them are very well done, almost proof.
I noticed it when I was preparing a set for one of the Great Grand Children born in 2008. I have it in a 2x2 for her set. I think it will work for that quit well. Thanks for the comments.