Unknown maker from Derpt

[Ubaranda]

Hello!
This is Derpt, assayer is Alexander Shamarin (Александр Шамарин).
Who is maker?
Thanks in advance!

[Qrt.S]

What a lousy punch, a real smudge. What letters do you see? I imagine seeing C.L. That would be Carl Friedrich Luetten (Luethen) 1818-1868, but....?

[Ubaranda]

What a lousy punch, a real smudge. What letters do you see? I imagine seeing C.L. That would be Carl Friedrich Luetten (Luethen) 1818-1868, but....?

Yes, you are right - the maker mark is bad. But I do not see CL. Maybe EB - Eduard Brockhusen?

[Qrt.S]

Cannot see a B, but with some imagination:

Sorry, a difficult case...

[Ubaranda]

Qrt.S, thank you for your efforts. This is really difficult case...
Regards!

[Goldstein]

Hi -

well known mark, assayer A. Schamarin 1864, 1869

[Qrt.S]

Could be Brockhusen...but the mark is still a bad punch. Aleksandr Shamarin's working period in Derpt/Dorpat/Tartu was 1863-1871