European saber blade - request for ID

[Martin Lubojacky]

Hello, I am shifting this tread from the "Ethno Chapter", since - maybe it belongs here:
Enclosed please find photos of relatively ordinary saber found in Ethiopia.
Please, does anybody know anything about NH + Son (fils) supplier ?
Where does the blade come from ?
The age ? - I think it could be end of 18th century (?).
Could you appoint coat-of-arms: one-head eagle with the cross in the shield ? And also there is engraved cross set in the crown, on the blade.
I cannot read properly the inscriptions. They could be significant for the allocation - "Blahmann ???, Solong...or Solingen ???
All parts of the sabre were used a lot, it visible both on the handle and the blade.

Thanks for help.
Martin