Ya' got me stumped, there. I know nothing about these and other silver tokens or medals. Sorry.
[The quote on the medal is widely confused. Here is the full text:
Article I, Section 10, Clause 1:
No State shall enter into any Treaty, Alliance, or Confederation; grant Letters of Marque and Reprisal; coin Money; emit Bills of Credit; make any Thing but gold and silver Coin a Tender in Payment of Debts; pass any Bill of Attainder, ex post facto Law, or Law impairing the Obligation of Contracts, or grant any Title of Nobility.
This clause refers specifically to actions prohibited to individual states, not to the Federal Government. States may issue bills of credit, bonds, certificates of indebtedness, etc.]