[Graham Boak]

When? I'm sure I've seen information about the prewar finish - try Mushroom Monthly's booklet on the Walrus. The wartime pattern for the Walrus is well known: how any individual type varied (for example, how far the upper scheme came down the sides, mainly a matter or time period)) may need a photograph.

If you get no better result here try one of the ship modelling boards, Steel Navy or Modelwarship, who are generally quite considerate to those more interested in "wingy things".