Antique 14k round locket

Antique 14k round monogrammed locket 6.1 g

1.25 inches 

She has a gorgeous hue of gold still very glossy shiny - has been in personal Collection for years. 
jump ring is 6.05 mm long by 4.32 mm wide stamped on jump ring but unreadable by these eyes. 

marks COS 14k inside locket