Hi, Amena solved the mystery (if there was mystery at all, more likely we did not recognize Hindu script). Nirmal is Hindu first name and it appears in Nirmal Jewelers. Meaning ``pure`` does not refer to silver fineness (pure silver) but given name similar to Catherine from Greek katharos i.e. pure. All said, modern production by Nirmal Jewelers, India.
Thank you everybody for the help! I have to admit that it was a bit of a mistery because of the language,but hoppefully this thread will help others if they stumble across something similar Best regards, Silveradrian