https://www.oldestsweetshop.co.uk/catalogsearch/result/?q=black+jacks
Same things probably.
I've often wondered about that myself. I assumed that black jacks were an American sweet (candy).
Yes I was talking 240 pennies to the pound. Just didn't want to feel; that old.
Wrong attitude IMO. Being old(er) means that you/we have survived against terrible odds.
Here is another favourite from my childhood, Penny Dainties. Rectangles of hard toffee that only just fitted in your mouth. We used to hold one in the palm of your hand and smash it into the edge of a wall to break it in half.
And Coo Candy