@chicfarmer I honestly have no idea, a friend inherited them hidden amongst an additional 30,000 pieces (yes not a mistake). The person who bought them holidayed extensively in Thailand, Cambodia and far east sorry I can’t pin it down more than that.
Thank you for finding out more about these @Bluegreen. I have forwarded the information to my friend: she is so delighted to finally know more about it. You are so kind to help.