Unknown maker?

[Goldstein]

Hi all -
have since years this enamel napkin ring but can not find the maker. Maybe someone can help?
X
X

Many thanks in advance

Goldstein

[Qrt.S]

Since the ring seems to assayed by Ivan Lebedkin in Moscow we have the town and the time span 1899-1908. The only known master almost fitting the span is Sergei Mahalov, mentioned 1898 in Moscow, but....? It could of course be one of those still to name unknown masters....

[Goldstein]

Hi -

I see 3 (three) letters!

Goldstein

[Qrt.S]

Yes I noticed it too and it could be three letters but what would be the third? I tried every possibility with it too but no luck, sorry. On the other hand the third " letter" could be apart of the decoration, but...?

[Goldstein]

Hi -
under a magnifying glass I can see more of course than you on a photo - I tryed many combinations - in vain.
I see H, И or K squeezed by the kokoschnik mark and opt for CMK, PL #2887 - a nobody!
Anyway - thanks for your effort.

Goldstein