18th c STERLING SILVER SHOT GLASS BRITISH EG into a lozenge under a fleur de lys and over a star Elizabeth Godfrey entered 1741

18 th century STERLING SILVER SHOT GLASS BRITISH EG into a lozenge under a fleur de lys and over a star Elizabeth Godfrey entered 1741 , 2.7 inch tall approx.London 1751 hm-A further mark period 1784 - 1890:
Sovereign head ('duty mark'), certifying the payment of the duty????
monogrammed A & L.
Any comments welcome!Is it that old????