... . 2)process: die struck with soft enamel ,with epoxy. 3)Free artwork and quote . 1)challenge coins are used for gifts ... ,wedding etc .2) material include brass ,zinc alloy ,iron ;plating is gold ,nickel , antiques brass and antique gold etc .3)process ... ,photo eached,printing .4)Any design and color is OK 5) Free artwork and free quote .6)100% quality guranteed! soft enamel challenge ...