Steve, my memory must be at fault, as I was sure that the Schlumpf Obsession mentioned 4 Royales? I do know that when I was at the museum they were recreating one, unfinished with one of the railcar engines, as I have a photo of it. It had been taken from the workshops in it's incomplete state. I was there not overlong after the sacking by the workers, so much was as the brothers had the place