Help identying artist.

I have a Bolo made with Boulder Turquoise and Sterling with the Indian Hallmark L4AZ Sterling. Does anybody know what Artist this is??? I have searched and can not find anything.

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I am going to go out on a limb here and say that that is most likely a traders’ code that was used to tell the trader how much he paid for it, or how much he needed to charge for it, 1 or the other. It would help a lot to see a picture of the piece and the Hallmark.