A clue as to what we are supposed to be looking at would be helpful. Also try to remember to crop away all unnecessary background leaving just the coin as the focal point, preferably oriented in the correct position. Welcome to CT
The dribble out of the nose was probably after the mint. And of course, it's metal, so it doesn't dribble so someone probably spilled something on it versus boogers. Welcome to Cointalk. without specifics we do not know the context surrounding your question. It's in your hand, your question is in your head. We need more information.
Only if it has something that looks like this: A cud must touch the rim and it will be similar to this shape, which is large. Welcome to CT.
I don't see a cud anywhere. Can you be extremely explicit in where this is exactly? On which side? Or even use a program to circle what you see?