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I have looked everywhere I know to look and can't identify this mark. It came out of an estate where most of the silver was mexican, so I am assuming this is too. It has the initial ATN on either side of pick axes, all inside a shield cartouche. If anyone knows this mark, I will be eternally grateful for your help.

I have ten desert plates with the same mark. I believe they are Columbian. Did you find anything out about it.

I have four wine goblets ...same mark if you find any more info on the mark please advise, mine were brought from Columbia S.A. by my Great Uncle around 1920.

no more idea where this mark comes from?

See: http://www.925-1000.com/forum/viewtopic ... 32&t=13150" onclick="window.open(this.href);return false;

and: http://www.925-1000.com/forum/viewtopic ... 32&t=17771" onclick="window.open(this.href);return false;