
According to the American Model Engine Encyclopedia, these were imported by International Models in 1935 from Japan. The first one was called the IMP Tornado. S-2 and had a engine displacement of 295 cu in.
The V4 was called the IMP Tornado V-4 with a awesome. These were maybe one of the earliest attempts at importing model engines from another country at the time. This is a very rare 4 cylinder carbide dry ice engine. You just don't see these around.This one is in good shape for its age, especially since these were made from thin stamped brass. A must have for a serious collector who wants a rare and unique engine.