What Year these vintage bowling pins came out?

There I was staring at something on the wall inside Savers.
Yet my focus seems to be sideways.
I turned my head to the left and here they were.
With curiosity, I examined the items but I have no words for it.
The first thing that came to mind was…they have the features of bunnies.
What to do with them I am clueless.
I bought them anyway.
For the price of $3.00 which is cheap to this day they are in a plastic bag sitting on my desk.