Sphre AIR (XID) is a unique coin with a unique idea: decentralized ID management.
Their ICO was successful, but never had a big chance to take off, since the price of the coin rose during the boom, and then dropped like the other alts.
Their market cap is 7 million (maximum supply is 30 million). That is TINY for such an ambitious project.
They have a very impressive looking team.
Under-the-radar coin that has massive potential for a 10x.
It's like a throne now or even earlier, it's also very similar. Either the coin is still at the stage of development, or it is completely nonexistent. But more and more people believe in such coins thinking that they can increase, but in fact it is an unsuccessful project without further support.