Thanks Paul for the info..
The Gr.Duchess in question has a name plate in the front storage compartiment ( all finished with carpet…very clean) where you can read “limited edition” and this car is # 21 out of 250. Was there only 250 Duchess produced or there was a special edition limited at 250 kit ??? (I can not post the photo of the name plate!!!) This one is black with real wire wheels.