Hi Carla hallmarks are distinguishing stamps used to mark silver and gold; it's a mark of distinction or authenticity. In the case of Non-Latin marks, images of the marks are mandatory before proceeding.
Alternatively you are welcome to submit the Appraisal Form for a Professional Appraisal, which includes a Valuation. (an email address is provided to send your images too, after sending through the form). An expert in this area will be allocated to appraise and value your jewelry.
Best Regards, Rebecca www.antique-jewelry-investor.com ANTIQUE JEWELRY INVESTOR SUPPORT TEAM