Looking for original Paws i trip pans

I am looking for some original paws I trip trap pans that used a piece of copper wire as a pan tension shear pin. I am interested in pans that would fit the larger sized traps such as a #4 trap. I would consider purchasing traps with the pans or the pans and dogs alone.
I have attached a picture of the type I am looking for. If you have some to sell, please send me a PM
Thanks.