Osul - Fire Engine "Pronto Socorro" with original box - Portugal Very rare Fire Engine "Pronto Socorro" and probably in an unplayed condition made by Osul, Portugal. The fire truck is made of hard plastic and features brightly colored, hand-painted details. It is red and silver, with nine blue firefighter figures. It appears to date from the mid-to-late 1950s or early 1960s. There is a hole in front of the truck for a string, allowing it to be pulled along. The fire truck is in mint condition and comes with its original box, which is in very good condition. The box features illustrations of fire and emergency response scenes. See photos for the general condition of the toy. They are a main part of the description.