340 cipher SOLVED after 51 years!! Dec 12, 2020 20:12:57 GMT -8 Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by ophion1031 on Dec 12, 2020 20:12:57 GMT -8 Confirmed by the FBI!I'm closing this thread. There will be a thread about this in the Zodiac cipher section.