I wish I knew more about these, they caught my eye by how unique and unusual they look.  They appear to be handmade as all the stitching is clearly not by machine.  The decorative designs on the front and sides are done with some type of gold colored twine line thread and interwoven.  I can only imagine the time that went into making these.  Please tell me more about them?

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I have a great set of 6 dining chairs made by Stickley Furniture Co.  The name is stamped on the bottom and I think they are cherry wood.  The chairs are all solid with no major damage.  The joints are all tight.  They do have normal wear.  I don't know any of the history but I did purchase them at an auction in Mio, Michigan.  I am looking to resell these but am not sure how much they are worth and wanted to have an appraisal on them first.  Thanks for any help!!