If it’s an higher scenario “L” and a decreased scenario “c”, it’s for Louis C Marks who made jewellery while in the 40s. Even so, this interpretation is more unlikely, as “JP” by itself doesn’t normally signify a specific steel typical. CN means that the jewellery is manufactured in China, https://casper77agenjudidansloton44443.newbigblog.com/43316389/top-latest-five-jp88-urban-news