Now are you sure about that Bill K.
As far as I can remember they Herring Board adopted the metric plastic boxes straight after the baskets.
Now the white fish industry; They had wooden boxes untill very recently.
I may be wrong but I'm sure Clementine could have have fitted her tiny feet into either the metric plastic herring box or the bigger white fish wooden box.
Mind you, the way things are going in the North Sea these days, you've more chance in catching Clementme's feet than you have of getting a good catch of herring - or white fish!