I have no idea when the tin was made but maybe I'll find out one day. I don't ever remember seeing them on sale but of course that doesn't mean anything.
Isn't it fun though? It shows the (original I suppose) Walker & Son shop in Leicester, and a mustachioed man who must be Mr Walker.
Considering I write about crisps and crispy snacks on a daily basis I couldn't really ask for a better tin. Brilliant.