The coin size of 1.57*0.12inch/40*3mm, lightweight and easy to carry. You can put year of the commemorative coin in purse, wallet, accounting book and handbag. Not fade and break down, you can keep for a long time. Made of iron material, thin but sturdy and durable, not easy to get rust. And playing with pearls design, people believe that can bring good luck, health and wealth.