It indeed it may not be Russian, when I bought it, it was described as German and I thought it was as well. However, I went through all of the hallmarks at Theodrichs comprehensive Silberpunze, which has hundreds if not possibly thousands of pictures of German and some near German hallmarks, and none of the letters E in the hallmarks look like this. Then when searching online I found a few major auction houses and antique sellers also had cups that were nearly identical in design to this one and were described as 18th century Russian and many had Russian hallmarks (Not all though). If anyone is interested I will send the links but I don't believe I am allowed to post them here or even their pictures as I don't own the rights. However, if you simply google '18th-century Russian beaker' you'll find many of my examples such as at Sotheby's and Bukowskis.
Again, I am not saying that this means the piece is definitely Russian, I am just trying to explain why I first thought it was. I didn't just pull it out of thin air. I appreciate everyones thoughts on this so please don't think I am being argumentitive I am just very confused.
So if it is not Russian, and I am pretty sure its not German, what is it?
Qrt.s, I have attached some photo's for scale