Clean the dirt off of it and a good in focus photo of the design on the ring.When you post photos click the full image tab.
If the sphere is against a piece of paper with letters,it won't invert.It will invert with distance.
Any clear sphere will invert an image since it is just a lens.A clear glass marble will invert the image.
https://www.rubylane.com/blog/uncategorized/what-is-a-japanned-finish/
When you use a solution or other substance it is called an applied patina,many people use a liver of sulfur solution........
Good luck finding it,but there have been hundreds of maker's marks that have not been recorded.
Rabbit with long ears.
see chart... http://flytyingnewandold.blogspot.com/2017/05/seed-bead-size-table.html If you use the right beading needle,it really doesn't take...
U.S.made objects do not have hallmarks,trademarks and metal content for precious metals.
Looks like something made at one of many craft schools like Penland.... https://penland.org/about/
Looks more like someone's poor attempt of a monogram.
The sides are some type of burl wood veneer not sure what type of veneer was used for the top.
The style was called Southwest sterling silver fluted bench beads,many were commercially made and sold by various suppliers.Most of those sold...
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