If you're looking for premium long-term archival storage or just a great way to display your coins, look no further than our coin snap selection. Each coin protective case is made of inert, high-quality, crystal clear polystyrene, a 100% archival plastic that will not harm unpolished coins. Every coin snap features a 2-piece design some have insert and some are insert free. Find coin snaps that best fist your needs at K & M Coin and Currency Supplies.