A challenge coin is a small coin or medallion, bearing an organization’s insignia or emblem and carried by the organization’s members. Traditionally, they are given to prove membership when challenged and to enhance morale.
I have to say your company and you are the best I've had to deal with in a long time. I was an admin for a Sheriffs Office in TN for three years and dealt with many vendors and budgets. Sparta has been the most pleasant business in many years I've had the pleasure of doing business with. Thank you!