An early 19th century Irish silver mounted Glory of the Seas shell (Conus gloriamaris)snuff box

An early 19th century Irish silver mounted Glory of the Seas shell (Conus gloriamaris)snuff box, with maker's mark only, that of Aneas Ryan, Dublin circa 1810, the mount with a reeded border, and flush hinged cover engraved with castle ramparts below a star, length 10.3cm. **This shell could be a Conus Textile, and not a Glory of the Sea shell.