Ledger Nano S only used a couple of times, protective plastic wrapping is still on the usb cable. The device has been reset. The piece of paper to write your security passphrase on is missing. I am unsure why it has the number 17 on the back. I've had no problems using it for bitcoin, etherium and dogecoin, though storage capacity is limited to a small handful of wallet types. Also included are 2 brand new Yubico usb security keys. these are not required to use the hardware wallet, I just don't need them and feel that a security conscious person using a hardware wallet may find some benefit from them. You can also visit the Yubico website to verify that the keys are genuine. I am unable to accept returns, so please be sure of your purchase and see all photos.