These Coins do not have holograms attached and have no private keys included. This provides users with peace of mind regarding their private key safety. Many regard these coins as wallets that can be loaded with as much as desired.
Some have a “face value” of Bitcoin. We recommend you do not load more than the face value of coins.
Removing this responsibility from the creators has allowed them to focus on the design and there are indeed some beautiful Coins out there. Simple, elegant and attractive, some really are mini pieces of art.