Trade dollar 1875 - Is it authentic or is it a fake

Please, I need your help. I don't know is it authentic cos it's really hard to distinguish.

http://img03.allegroimg.pl/photos/oryginal/986/94/95/986949523_1
http://img03.allegroimg.pl/photos/oryginal/986/94/95/986949523

second part on another auction:

http://img13.allegroimg.pl/photos/oryginal/981/52/28/981522801
http://img13.allegroimg.pl/photos/oryginal/981/52/28/981522801_1

BTW check another coins.

PLEASE it's important

 

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I'm 90% sure the 75 CC trde dollar is fake...

 

Pretty sure they are ALL 3 fakes...

 

agreed, after looking closer the seated dollar is for sure fake and just look at the date on the 85 morgan....FAKE!!!

 

This was a forgery, you can clearly see that the coins have been made recently.

 

They are all counterfeits.

 

The trade is fake. You can see along the rim on the reverse that it was cast and not struck. Whoever made this counterfeit tried to remove the seam from the cast, but did a poor job of it.

 

Mike here is a genuine 1875 Trade Dollar:

 

Let me try again: