Another one that made me think ... there is something wrong.
Am I correct ?
http://cgi.ebay.com/8-Reales-1764JM...t_500wt_1331

What I didn't liked :
* irregular letters (LM on the left and right not similar for example)
* top right of the crown not looking like the top left
* bottom right of the shield strangely thin (those were made from master punches then if I remember well)
* The edge is blurry, but appears to be a bit thick
* Middle of the pillar side is missing details
What do you think about it ?
(I don't intend to bid on it, I'm just learning here)
Now that I'm at it, here are two other strange ones :
http://cgi.ebay.com/1738-Spanish-8-...t_500wt_1331-> Patina, overall look, odd missing metal on one side.
http://www.ebay.com/itm/SILVER-2-RE...t_500wt_1331-> strange strike and color, but ... could be due to harsh cleaning.