The next to the last tall book. The blue-green one next to the shorter red one. It is the new updated version of the red one. “Native American and Southwestern Silver Hallmarks 4th Edition” by Bille Hougart…The next, if you just want hallmarks, would be the tall brown book in the middle. “Hallmarks of the southwest” by Barton Wright. It is older and has no actual photos of the marks, just drawn renditions but still very useful.
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