Good morning happy Thanksgiving. This 1961 D has some weird things I'm not sure what to call them. They look like protrusions coming out of some of the devices. My questions are, what are these/what causes it, and is it a common thing on 1961/1961-D quarters.


I of liberty



The U of trust has noticeable ones but I included the rest of the nearby devices just in case.

Thanks everyone for taking a look.