I have found quite a few of these Lincoln shield cents with what appears to be doubling on the dates and mint marks. I have included a couple pics with examples. I am leaning somewhat to mechanical or die wear doubling but the numbers and letters still look pretty crisp rather than the mushy numbers you get on die wear types. Let me know what you all think. In an entire box, I found about 10 or 15 of these in all different dates.

