ID Danish chairs  

PS: Any information about the manufacturer would also be very helpful to me.

Hey @browkin, it won't be easy to find info on them. Both appear to be rather generic designs. The first one falls in line with many similar models with a curved backrest. You can scroll through this thread to find many IDed models, yours isn't in them. The other one is a cow horn model but less elaborated than the famous ones by Wegner or Faerch. I'd guess that both chairs are low level productions by small companies, inhouse designs "inspired by", sold rather cheap but not many seem to have been produced. Otherwise one would find more of the same on the internet. 

Of course they could also be designed by the likes of Johannes Andersen, Arne Wahl Iversen or some of the other prolific furniture architects who drew countless models for many, many companies. 

@herringbone: Many thanks for your response!