This pin is hard enamel and approximately 55mm tall tall. It is made of zinc alloy and nickel plating. 2 locking clutches on the back keep it in place on your bag or jacket.
A Grade pins are near perfect with very minimal defects such as a small scratch or scuff on the enamel or a tiny underfilled section only noticeable upon close inspection.
B Grade pins may have more than 2 imperfections, but still look lovely from a distance.