Help to identify these unusual markings.

[CutlassCollector]

Thanks Corrado and thank you for your help. It certainly pointed me to the right part of the world and gave me a tour of some very spectacular pistols.

I'm still looking for any connection to the grappling hook type anchor - it is so different from the French that I think it may be connected to pre-Italy naval forces possibly from Sardinia-Piedmont, the Two Sicilies or even the Republic of Venice. Anyone have any Italian naval swords or cutlasses?

Any help greatly appreciated.
Regards, CC