rOtring Initial ballpoint in blue and silver. New in box with papers.
I'm finding very little information on the Rivette, but it sports the reliable basic rOtring nib. It is plastic and lightweight but a decent diameter.
This is a lightweight rOtring Esprit fountain pen produced in the late 1990s, made of anodized aluminum with the trademark rOtring red ring around the top of the cap.
The rOtring Primus was designed as a student pen and pencil. The barrel is made of wood stained bright yellow to match the cap end. These were not imported to the US.
You're going to want one in each color!