Help with dating old Joseph Rodgers & Sons razor ?

[SaintDan]

Hi All,

I was wondering if anyone could help ?

Whilst clearing some old drawers in a shed, found a razor which I suspect was given to my father many years ago.

I can't seem to date the razor - as you can see from the pictures - what I can make out is :

Trade Mark Granted 1682
H.M.Govt.
Joseph Rodgers & Sons Ltd
Cutlers to their majesties
No 5 Norfolk Street
Sheffield

Marked with a small six pointed asterisk and a small iron cross ???

The case isn't in the best condition, but the razor is. Needs a good clean, but is sharp !

Any ideas on dates or anything related appreciated.

Thanks !