I have a complete Sudbury Numismatic Park set with 18 tokens, 6 are .999 silver.
https://en.numista.com/catalogue/contributions/voir_ajout.php?id=11692410
There is one token described as "Medallion - Sudbury "Numismatic Park" “Indian Wampum - silver .999” and I am trying to find the mintage numbers on this token as I understand it was not originally part of this set and was added later.
If anyone has more info please update here. thanks!