Volvomax was able to solve the mystery regarding this Volvo Amazon faux-convertible. Here is what he wrote :

Armand Ruhl offered his models under the name M.R. Cars. I think he stopped back in 2003 making model cars. This 1:43 scale model is made out of resin. The overall quality is fair. But a closer look at the model reveals many tiny air bubbles in the resin. The painted details on my example are ok. The quality of the glass is poor.