I purchased this at a vintage shop, but I'm not exactly sure of its history, such as whether it was made for export to America between the 1940s and 1960s and then "returned" to Japan. I can't find any hallmarks, perhaps because there's no space for them in the design. The design connects parts with wire, similar to the pearl bead cluster earrings that were exported in large quantities at the time, so I hope you can enjoy it casually, regardless of whether it's a vintage item. It's large but light and adjustable, so it can be worn on any finger for a stylish look. It's a hassle to bring expensive jewelry on trips, but something like this is reassuring and useful. I'm offering it at a low price. Size: Diameter of pearl cluster: 23mm There may be some error. Please consider this as a guide.