The Islamic date appears to be a 'backward' 1700; converted to our Gregorian date approximates 1786. The mark on the left coin is called a tighra, or tugra; the Ottoman seal.
Here's an interesting article that explains its use and history: Osmanlý Padiþah Tuðralarý - Ottoman Sultan Tugras
Don....
Neat find! I detected @ GI only in the area where family were surf fishing. Found only modern clad, they were surface grading the sand at the time...dang it was hot out there.
Hey TXLAHUNTER!! Makes you wonder what the Ottomans were doing on Grand Isle!! Must have been doing a little surf fishing and getting a little sun time in!! Neat Find!! CONGRATS!! GOOD HUNTING!! VERDE!!