The Ransomes plate has it as Mg40- The Ransomes register has it as a Mg40, I have a photo of the plate with serial no and designation (mg40) which I took when researching it. It only matters to members of the site who may need reference to info regarding an Mg40 who wont find it under Mg6. If you post a photo of the plate on the machine would this help. Id no is 15295.