Native/S. American/Mexican ? Hallmark Help

[greenmtngems]

Hi, I have some heavy / vintage sterling silver rings, different styles, that have similar hallmarks but I haven't had much luck in identifying.  This ring has an "AT" with an almost scripted 925 stamp, a "G" on top of the 925 and a symbol that is really hard to make out.   Male profile, headdress?  Tx so much to anyone who may be able to help.  

[thevintagesilvershop]

Your ring, while Native American in style, features a Polish hallmark from Gdańsk on the shank. Perhaps it’s possible that someone made a repair by affixing an NA piece to a shank made in Poland??

[greenmtngems]

Oh wow, very cool!  I have about 6 rings from the artist, most are mod aside from the Kokopelli and all were purchased from the same person.  I knew she was European but I would have never known to look for Polish silvermarks.  Thank you again, so helpful.