Hi Bratte,
Welcome to the forum.
Yes, made by John Round & Son Ltd, sterling silver, Sheffield date letter, I believe for 1899.
For info see;
http://www.925-1000.com/dlSheffield3.html#MOr for more information about John Round & Son Ltd (Joseph Ridge) see;
http://www.silvermakersmarks.co.uk/Make ... eld-J.htmlLate Victorian regency style silver jewelry box, hence the velvet lining and once perhaps part of a dressing table set.
The numbers are internal reference (code) numbers used by the silver house/smith. If I may say, the box could do with a little LTC in combination with a drop of silver polish.
Oel.