This is the metal miniature that was made by Harlequin Miniatures.
This is quite an old casting and as you can see the metal has discoloured, however it hasn’t gone brittle or anything like that, so I am expecting it to paint up fine.
The first episode with the fourth Doctor (Tom Baker) was Robot. The Robot in the TV programme looked a lot more flimsy than this casting, but that is down to scale more than anything. Next stage was a white undercoat.
This does show the detail in the model, compared to the plain metal shot.
Get Robot on DVD at Amazon.