This listing is for one vintage 5/8" round chicago screw back concho with brass contrasting rope edge, from the 1960-70's. Unmarked but is alpaca, which is similar to nickle silver, with brass rope edge. New old stock, hasn't been used but does show signs of handling, age, and patina from storage. See photos.
Chicago screw backing will be included but is not shown in the photos.
This is the only one of this size and pattern. I'll be listing more vintage conchos, please see my other listings.