Maker’s mark databases: On-line means and databases frequently compile and doc maker’s marks used by jewelers globally. HK is really a trademark that stands for Harriet Kelsall. They design and provide jewellery all over the UK also to other places also.  This information will help you recognize the JP88 stamp and https://casper77-situs-agen-judi68912.alltdesign.com/jp88-for-dummies-55720749