The 2018/19 Barcelona Home Stadium shirt is made by Nike. The colors of the Original shirt are much brighter than the ones on the Fake versions.
Nike’s logo is slightly deformed and out of scale on the Fake shirts. Barcelona’s crest is thinner on the Original one. Rakuten sponsor is closer to Nike’s logo and Barcelona’s crest on the Fake shirt than it is on the Original one.
There is still one red stripe after Nike’s silver authentic label on the Original shirts, while there’s a blue one after it on the knockoffs.
The size information are printed in white on the Original shirt, they are grey on the knockoffs.