Hi Atlas -
as a seasoned collector of Russian silver for the last 40 years plus a meaningful collection I had my share of mistakes. First because I was ignorant - later because I underestimated the fake industry. Fortunately, I can count these glitches on one hand.
Sooner or later, everyone makes a mistake - this should be considered as a lesson - and not lose the desire
Your Khlebnikov napkin ring:
I assume that you know who he was and what he produced - and in what quality. Not for nothing did he have several Court supplier titles.
Here all his known marks as a refresher.

Here some examples of his work.


The Court supplier´s mark was only together with his full name used! (see your napkin ring!)









Now compare the quality and the style. I repeat: the letters И Х were never with an eagle used!
Sorry for that!
Regards
Goldstein