These pins are just like all the others except they all have some slight imperfections. Some are more noticeable than others. All pins are hard enamel.
B-Grades are classified as barely noticeable and C-Grades are the most visible imperfections. This chart is a simple way to describe how imperfect each grade is for each type of pin.
Teeny dent on top of one ear / Very slight overfill on some lines
Inks outside of the design
Slight damage and scratches to horn and face
Inks outside of the design / Teeth and horn not colored correctly
Very slight underfill on Order's eyes / Some scruffs on the metal
Small scratches across the metal and inks / Tiny black in dots on petals
Larger black ink spots on some petals
There are very limited amounts for each one and they all vary in their imperfections. So unless you want one with a specific imperfection, the one you will receive will be random from the grade you choose.