Help with Hopi Hallmark

I have a pair of Hopi earrings and cannot identify the artist’s hallmark and there seem to be 2 hallmarks. Any help?

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I see an HN hallmark in the Hopi Silver book that has the name Stephen Hyson Naseyoma. It is hard to tell from the picture, is it a HN, where the first leg of the n is the last leg of the h?

Thanks Jason - I did find it in the Hopi Silver book and yes it is Naseyoma.