Canada New Brunswick tokens

Hello,

Why are those 4 tokens https://en.numista.com/catalogue/index.php?r=New+Brunswick+penny&c=&cj=y&cat=y&mode=simplifie&p=1&e=&d=&ca=3&no=&i=&v=&m=&a=&t=&dg=&w=&g=&f=
not all in the same section ?
They have Breton numbers 909 to 912, I guess they should all be in Canadian provinces - New Brunswick - Pound (1852-1860) section right ? Federation was after 1867. Or did I miss something ?

Regards, André