It is a .800 pearl pin with "MSZ" or "MS2" any ideas? https://www.antiquers.com/attachments/a39d234f-7345-40a0-87ee-b5136ca3a6fd-jpeg.235140/ https://www.antiquers.com/attachments/f74ee155-1105-4ac7-8b02-fabf9b3029fa-jpeg.235139/ https://www.antiquers.com/attachments/1663e7d5-d4b...