What Is The Value/How To Find Value - Norway "Norge" - "Camilla Collett", "Norges Grunnlov"

Hi -- I'm helping a colleague who received these from an aunt back in the day. Appreciate all help in getting these evaluated.

These are first day covers. They are philatelic products. They have fallen out of grace with collectors. Except for the earliest ones, they, normally, are worth very little.
The stamps on the first cover you posted are severely damaged. I am afraid to say they are not worth anything. Most collectors would throw it away.

The second cover you posted was not stored well. It has condition issues. In addition, the address is quite sloppy. That devalues it. It will have very limited value.

Hah interesting - thank you so much for your help!