James Sadler Biscuit Barrel / tea caddy

I have a James Sadler 1940 biscuit barrel. I would like to sell this - it’s still in a good condition with some paint cracking and the gold trim worn away in places.

I am finding it hard to find any pieces with the same pattern so I am unsure roughly how much this is worth.

I can see online that the 8 on the base is the pattern number but I cannot find out much more. Any ideas or help would be really appreciated.