Pin Quality Guide
A-Grade Pins (aka standard or 'perfect' quality pins)
For the most part, A-grade pins are 'perfect'. However, very, very minor 'defects' are still counted as being A-grade, due to the hand-made nature of enamel pins. Very small scuffs and enamel not being 100% level with metal are still considered to be A-grade quality.
B-Grade Pins (seconds sale or 'defective' pins)
B-grade pins typically contain imperfections that range from moderate to severe. These imperfections include missing enamel, very big or obvious scratches or scuffs, discolored metal, or discolored/spilled/dirty/incorrectly filled enamel.