1. WatchesIn the watch business, the term limited edition carries an ambiguous meaning, making it susceptible to misuse. There is, however, no mistaking the limited nature of the 40 one-off timepieces in the Only Watch auction, which took place in Monaco on Sept. 23 and raised $6.3 million to support research on Duchenne Muscular Dystrophy. The models—donated by the world’s best watch­makers—included a fanciful Flying Panda timepiece by MB&F in collaboration with Chinese artist Huang Hankang, the sleek black-on-black Richard Mille RM 027 Tourbillon worn by Rafael Nadal when he won the 2011 Monte-Carlo Rolex Masters tennis championships, and the ultimate collector bait: Patek Philippe Ref. 3939, a minute repeater and tourbillon that brought in $1.9 million alone.2. AuctionsWith this ring, Marilyn wed the Yankee Clipper.Can’t make it to New York City for Christie’s Elizabeth