My grandfather gave me two treasures. One Pinarello Civatta and a 1990 Eddy Merckx 10th Anniversary.
What can they be worth?

Hello and Welcome.
Enjoy those Old Bikes.

Hello fellow forum newbie! I think if you're looking for worth evaluations, you might have better luck in one of the other boards. I know there's a"what's it worth" subforum for vintage bikes, and so might try there, although I'm not sure if the bikes you have fit that description of "vintage". Good luck.