I have this interesting cocktail shaker and I can’t identify the hallmark. I have only found a few shakers similar to this one with no description of the item besides “Chinese export silver”. To be quite honest I do not know if this is Chinese or Japanese but I could not find any examples of the hallmark. I have attached a few photos of the item as well as the hallmark. I also apologize if the hallmark photo looks somewhat unclear, however, it looks unclear in person to some extent.
Can anyone help me solve this mystery, I am clueless about this item.