By Lisa Hix — On July 27, 2012, the final relay runner delivered the flame of Olympia to Olympic Stadium in London, inaugurating the 2012 Summer Games Opening Ceremony. The 8,000-plus golden metal torches used during the relay—each has 8,000 holes, representing the 8,000 torchbearers who carried the flame 8,000 miles over 70 days—have become instant collectibles. In fact, Olympic relay torches are among the rarest and most desirable of all Olympics collectibles; some have brought six figures at...