I also have a coin with similar lines around rim . I can't remember for the life of me what they said .
Rim Cuds. http://cuds-on-coins.com/wp-content/uploads/2013/09/IMG_8065.jpg http://cuds-on-coins.com/jeffersonh-nickel/
Hey @Inspector43 Do you know what a Cud is now? Sal.. I believe he truly knows that IMO - I think it's a worn die issue.
I hope I do. I have been listening for a long time. But, there seems to be a fine line when it comes to Cuds on Rims. Please, if I am ever over anxious about an attribute let me know.