One of the features of a "global currency" which I have not yet grasped is how it would knit monetary and fiscal policy together across nations to form economic stability evenly. The Euro and Greek Crisis in 2014-2015 illustrates that universal currency adoption does not automatically equal stability and improvements. New problems creep up which need to be addressed. Any links to to cryto coins would cover some of the Euro challenges would be interesting to see.
RE: What’s even more intriguing about the picture is the fact that the year on the coin reads 2018