Here is a silver plated cocktail strainer marked “Gaskell & Chambers, B’ham ( for Birmingham) E.P.N.S. ( for electro plated nickel silver), Made in England.
The strainer measures approximately 7 inches long and 3 and 3/8ths inches wide.
Gaskell & Chambers started in business in 1797. At one time they were known as Britain’s biggest barfitters.
This is a serious strainer…heavy, well made bar tool.
It is available for sale here at my Etsy shop: https://www.etsy.com/listing/609930254/gaskell-chambers-silver-plated-cocktail