Antietam Coin Exchange at N Cannon Ave, Hagerstown MD - ⏰hours, ✓address, map, ➦directions, ☎️phone number, customer ratings and. Looking for Appraisers in or near Hagerstown, MD? Learn more about Antietam Coin Exchange. Services include Coin Dealers Supplies Etc, Appraisers, Except. Antietam Coin Exchange in the city Hagerstown by the address N Cannon Ave, Hagerstown, MD , United States.