Am a little lost in how to identify this, would appreciate any help
Scottish is correct. This is recognisably an Edinburgh hallmark; the town mark (a castle) is missing, but this is not unusual for this date. The date letter could be either “b” (1807/08) or “h” (1813/14). IZ is the maker’s mark and is that of John Zeigler.
Thnaks Phil, really appreciate that.