A quick observation, some of the centennial jugs are scratched Aug., others Augt., plus notice the variations with the letter "a / A" on both the centennial jugs as well as the jugs marked Bennington.
Centennial Aug. 16, 1877 Jugs
Bennington Aug. 16, 1877 Jugs
Aug. 16, 1877 Jug
The Aug. 16th, 1877 jug above is probably not a Norton piece,