The Grand Tour is a reference to a time when wealthy Americans and Europeans traveled around the world on vacation . This was usually done between the late 19thC and the mid 20thC colonial period in Western history .
During the late 19thC there was a great interest in 'Orientalism' in both countries .
Your dagger could have come from or been mfr'd in any number of Islamic countries .
The theme IMO is mainly Persian (Iran) though .
/ now , about that copy of Stone's < nag , nag>