Those look authentic, thin and 28 may be the 10 cash, the smaller ones are usually just 1 or 5 cash. Used to have a whole bag of those, was picking up my Chinese takeout once and for grins gave him the bag...boy did he become furiously enraged! Red in the face(that really shows up!), was absolutely not amused one bit. He said those are so very common in China it is an insult to even have them in ones possession, much less as payment. I gave him a big tip after that!





















