The thing is, I don’t think there ever was a So Black 19 from 20S. Could the one in the picture be a replica?I'm afraid that image is a 20S SoBlack Chanel 19 with the tag obscured to look as if it were an early image of the 22P SoBlack Chanel 19. The original poster on Facebook was purposely trying to show old season items as if they were part of an upcoming collection. Watch out!
Here is the exact same picture with the tag not blurred out. Tag says 20S.
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22P should be the first collection to have a So Black 19.