An old Russian tea cup hand painted Art Nouveau shape

I bought this cup with no plate from Dorita several years ago, sure it was very cheap. Sergio did not want it because it has a chip, but the hand painted flowers and the insect painted on it told it had to be mine. You know adore insects and birds painted....
When I was searching for the post of the russian candlestiks, came through a marvelous page in russian...with lots of russian porcelain. Several months ago I published on CW that another unmarked cup was an Art Nouvea Gardner Kustnesov.
On that page also there is one listed as a Kustnesov with the same shape of this one....
Everything is outstanding in this cup, the ground of beige colour, opaque but that still lets the light go through the porcelain, the leaf near the handle to put the smallest finger one when you are going to drink.....
It has been used a lot by some one...
The last picture shows the shape in the russian web page.... Thanks so much for looking.