Regretably, Krause do not quote weight and silver content of this coin. I have 4 coins of this type. For your information, their weights and diameters:
1750 (F) 13.83 grams, 35.9-36.1mm
1811 (F-VF) 13.55 g, 35.4-35.8 mm
1813 (F) 13.90 g, 36.0-36.2 mm
1820 (VF)14.03 g, 35.4mm
I am suspicious the std. wt. of this coin is 15 grams.