A very interesting thread and subsequent discussion. Here is an example of what original case colours look like re: a circa 1920/1925, Clabrough & Johnstone, SLNE shotgun. Not too bad an effort for just a Colonial export trade gun.

[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]
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TC