Any idea if this holds any value?

Appraising & Evaluating
1

Hallmark is YY very heavy and appears to be solid silver. Could it be from Mexico?image image

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2

a photo of the reverse side with the hallmark will help us help you

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3

image image

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4

Native made, likely Navajo.

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5

Any clue on the hallmark?

6

Yvonne Yazzie?? Found a few pieces on the web but Iā€™m not sure if this is her mark