Chinese "Fat Man" coin identity

Someone sent me these pictures so that I might buy their coin, and I am having a hard time looking for these marks on the coin, and trying to determine authenticity. Can you all please aid some?

It's a kansu/gansu yuan shih kai dollar, and I am sure it's a fake.

Cita: eazy.dogIt's a kansu/gansu yuan shih kai dollar, and I am sure it's a fake.

Thanks much, how can you identify that this is a fake, for my future reference.

Ask for exact diameter and weight,
original must be
https://en.numista.com/catalogue/pieces16006.html

but I am not a expert, just what I think.

Cita: eazy.dogand I am sure it's a fake.

 Why are you sure its fake?

  I have one of these available if you are interested.

  https://en.numista.com/forum/topic26785.html

Cita: redsmithstudios

Cita: eazy.dogand I am sure it's a fake.

 Why are you sure it's fake?

  I have one of these available if you are interested.

  https://en.numista.com/forum/topic26785.html

you have a 1/2 yuan...

and I talk about gansu mint...

https://en.numista.com/catalogue/pieces16006.html

Barnabus look in Numisdoc then numismatic encyclopedia, then modern fakes.
You can see my fake fat man dollar. I dont know if this will help but it lets you know that's there.

This type is one of the most faked coins ever.  I've seen ROOMS of these coins in China....all authentic of course.