Alexander the great coins

[Tetradrachm G]

Hello! You have recently helped me with one purchase of mine that proved to be fake. Thank you very much for all the information and the welcome.
Now I have seen 3 coins of Alexander the great and I would like some help again if you can. Any information would be appreciated.  

https://ibb.co/naYiMa
https://ibb.co/j8A8nF
https://ibb.co/edvKuv
https://ibb.co/jnL8nF
https://ibb.co/eALkZv
https://ibb.co/nQwg7F

[Joe Sermarini]

Also fake.

[Tetradrachm G]

Hmm Thank you very much for your help again. Could you propose me any link or book to buy so that i can get more information please?
It seems that there are many fake items all over the internet.  

PS: Where could i see that they are fake?

[Joe Sermarini]

You are on the website where you can learn more about fakes than anywhere else. Go to the Fake Coin Reports (click the blue text link) and then click through and read the study images to start.  That is not going to teach you how to authenticate ancient coins but it will teach you to spot most fakes.  

There may be examples of your fakes in the Fake Coin Reports or there may not be any place where you can "see that they are fake."  You can't expect to ID all fakes with matches.

There are fake items all over the internet, but there are also places you can shop that are safe. You need to rely on reputable, expert sellers with a guarantee of authenticity to avoid fakes. Click the shop button in the header.

[Tetradrachm G]

Perfect. This is what i was looking for. So i start studying then..
Thanks a lot for your help!