I did think I had this model somewhere, however the pilot has turned up.
This was the original Dwarf Gyrocopter and personally I think the best. It comes across more as an autogyro rather than a helicopter, whereas the later models do feel more like helicopters, almost too sophisticated for a fantasy setting.
This is the original pilot, later Citadel did a pilot with a helmet with a winged helm, which you could argue was more fantasy than this pilot.
You can tell there are issues with my modelling here as the seat of the dwarf pilot has a large glob of epoxy glue there, this was when I use that over superglue.
Now I just need to find the Gyrocopter.