Both the editor and the poet were less amazed to see exactly "Nasha marka" found in the cigaret case than with the case itself.
Something like that.
Not sure in the grammar though. Please tell me how it reads, if it sucks please help me rephrase it as natural.

Basically it's:
Nasha marka found in the case -> amazement = 10
Case itself -> amazement = 50

Funny enough, the first part of this thing in English looks more heavy and wordy; seemingly it gets a heavier sentence stress, whereas in Russian, the last part of the sentence is what gets the maximum stress. Dunno how to shift the stress tho.
Maybe reword it like: ... amazed more with the case itself than ...?