Based on the extremely poor quality images, I have the opinion that it was deliberately cut. Likely with a shear, or similar tool. Should you post images that show some detail, perhaps my opinion will change.
I think PEA meant to say it this way, since he is the poster child for patience.
The dark colors do make it really hard to see the coins you post and natural light does help a lot. You can preview the images before you post your thread to see how they will look to us.
Thanks and good luck.