1921 shapira...real or fake?
 

I understand every box came with 2 "Cards"...a portrait and a diff pose...therefore the portrait cards are twice as common as others.

I also understand the portrait is the most faked.

Does anyone know how to differentiate real vs fake in this issue?

You see the face version reprint all over eBay.

Don Hontz handles so many of these he would probably be able to steer you in the right direction.