I bought these from well known dealer in Chatuchak Market, Bangkok about 15 years ago. These are not something I know anything about, but bought them based on their quality as well as the authenticity of the rest of his stock so I figured they must be OK. They were represented to me as being Majapahit from Java. A good "bead" friend took a look at them a few years ago said they were probably repros but couldn't say why. I want to believe they are OK but...........? Any comments welcome. Thanks. D