eng Shui coins are the symbolic of good fortune, carrying the copper coins or wearing in the neck, which is not only beautifying yourself ,but also increasing your luck. People are fond of collecting these coins, which has become an interest today. Features: Made of brass, which can be kept for a long time, perfect for collection. Made in China; modern reproduction of Qing Dynasty These are authentic recreations of Qing Dynasty, which were round coins with a square hole in the center. The convention was used to allow people to string coins together, thought to bring good luck. However, in Taoist thought, the round coin and square hole represent heaven and earth. Good luck charm tied with red string for good luck: People holds that putting coins together and binding them with a red string or ribbon represents good luck. The tied coins are then a kind of good luck charm for bringing prosperity and fortune to the holder. The belief is the lucky coins should be placed in a wallet, purse, check book or anything in the wealth corner of your home to promote wealth. Reorient hand ties each set of coins with a fine and durable bright red nylon string to insure long lasting luck. Hang a set by your office door or on the monitor of your computer if you use it for work. Traditional Chinese knot is thought to bring good fortune as well, 2 different knots available. Specifications: Material: brass Coin diameter: 2.8cm Length: 36cm Weight: 28g Color: Golden Spec: 2.8cm Red Normal Chinese Knot, 2.8cm Yellow Normal Chinese Knot key word: custom coins, coins, emperor coins, brass coins, ancient coins