Hello and welcome. 
The ones with the two dragons are charms. They are typically larger than regular cash coins, and are designed to be attached to walls of houses, to bring good fortune to the house.
The other two are mass-produced machine-struck replicas of cash coins. The curiously slanted Manchu script on the back, and the background surfaces covered in little dots intended to imitate a sandy, cast surface, are the giveaway clues here. These items are intended to be tied together into auspicious shapes and bundles, again for "Feng Shui" good luck purposes. They might also be burned, in the traditional Chinese funeral practice of sending money to the loved ones in the afterlife.
Apparently, the tradition has arisen that replica coins are actually better at generating good luck than genuine coins. Genuine old coins might have accumulated bad spirits over the past few centuries, and need to be ritually cleansed before they can be used as charms. Of course, it is largely the people who make and sell the replicas that are perpetuating this belief.
The ones with the two dragons are charms. They are typically larger than regular cash coins, and are designed to be attached to walls of houses, to bring good fortune to the house.
The other two are mass-produced machine-struck replicas of cash coins. The curiously slanted Manchu script on the back, and the background surfaces covered in little dots intended to imitate a sandy, cast surface, are the giveaway clues here. These items are intended to be tied together into auspicious shapes and bundles, again for "Feng Shui" good luck purposes. They might also be burned, in the traditional Chinese funeral practice of sending money to the loved ones in the afterlife.
Apparently, the tradition has arisen that replica coins are actually better at generating good luck than genuine coins. Genuine old coins might have accumulated bad spirits over the past few centuries, and need to be ritually cleansed before they can be used as charms. Of course, it is largely the people who make and sell the replicas that are perpetuating this belief.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis



























