Original silver French Riyal Maria Theresa Date: 1780 AD Original silver Saudi Arab Riyal Struck in Mecca Date: 1370 AH Weight for the French Riyal: 28 grams Weight for the Arab Riyal: 11.60 grams Quantity: 3 French Riyals Quantity: 4 Arab Riyals Sale for the full quantity Total: 7 coins Asking price: 700 Riyals