Silver Bullet & Silver Shield is a collaborative effort between Chris Duane of dont-tread-on.me and the American Open Currency Standard (AOCS), the creation of Rob Gray. All the silver rounds or medallions that have seen first light as a result of this collaboration will be listed here; it is known by silver stackers as SBSS rounds or medallions:

http://www.youtube.com/watch?v=14fl2hVHI7Q&feature=share&list=PLBD9B8D92B126020E

 

 

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