Hi Dad -
When you call me maniac (if it concers Russian silver) - than you are absolute right and I feel honoured! :-)
Now let´s have a closer look at your "Russian silver":
The townmark is a lookalike of Moscow - Belarus or Ukrainian silver was generally assayed in Moscow - yes or no?
The fastening of the handle: see the file traces? See the sensless small round punch without mark? Here is your photo:

To show you how the Russian silver was correctly marked I enclose some photos of a cake platter from 15A.
Every part is marked with silvercontent, assay mark and maker´s mark.
There was no exeption! Just a flimsy 84 is not enough! Please note that the little round mark (assayer/proof) is only 1,5 mm but clear and crisp. This is too much for the fakers - so they always use an empty punch - like the one on your objekt. And because most of the buyers are ignorants or speculants - they have easy play!





This pics need no further explanation!
Regards
Postnicov the maniac