China yuan shih kai silver dollar coin with unique die clash error?Help plz

Hi.I have a piece of China yuan shih kai silver dollar error coin in used condition.Unfortunely,I still not sure if it is a die clash error coin or not because the HUGE ROUND AND STRAIGHT LINES RAISED OVER THE ORIGINAL DIE on reverse side and there is an unusual shade just right below the chinese word "yuan" and the shade is not RAISED on the surface.I have never ever seen anything like this before as a coin collector for so many years and I definely have no idea how did this "errors" appeared especially the LINES OVER THE ORIGINAL DIE.I also believe there is NO COUNTERFEIT COIN TO HAVE SUCH ERRORS LIKE THIS BECAUSE I HAVE SEEN MANY COUNTERFEIT COINS WITHOUT ANY TYPE OF ERROR.So,I need help from the coin experts to tell me this type of errors and explain in detail how did this errors appear on this coin,your help is very much apprieiciated as usual,hope to hear from you very soon.Please see the scans below and tell me what you think.Thanks alot.

 

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It looks like a huge die crack. But seeing as the circular one on the reverse isn't following any stress point on the coin, my guess is it's a either fake or a huge die gouge

 

This thing again?

 

Gouged die.

 

These are die cracks