Coin silver serving spoon, rubbed mark, ca 1805/15

This serving spoon is 9 3/4" and weighs 2.1 Tr Oz. The condition is excellent with no dents and only minimal bowl wear. The mark is rubbed and I am unable to determine who it is ( picture 2). I do believe it is from Philadelphia (or Pa.) because of the pointed shoulders. This is an unusual size and interesting piece of Americana. Ca 1800/1810.