Taking into account die variations, errors and metals, there are dozens of this historic die pairing. One of the more interesting (OK, expensive) pairings is Fuld 205/411 which is Rarity Level 9 (estimated 2 to 4 in existence). Some errors are Rarity Level 10 (unique). If interested in Civil War Tokens, check out the web site of the Civil War Token Society as a start.