Here are the 10 epic chronographs to invest in

(CNN)Each spring watch collectors descend in a frenzy on the "rare and important" timepiece auctions taking place in Geneva. This May they're drooling a bit more than usual over Phillips' special sale on May 14, "Start Stop, Reset: Epic Stainless Steel Chronographs."

The auction will present chronographs produced by the most prestigious watch manufacturers of the last century, including Rolex, Patek Philippe, Breitling and Omega -- that's on top of Phillips' regularly scheduled Geneva watch sale the next day.
    Of course Sotheby's and Christie's are also staging their usual auctions loaded with highly-coveted investment grade watches, several of which are making their first appearance in public. Among the items of note are a number of pieces with fascinating military and motorsports provenance.
    Check out the gallery above for the highlights from this month's auctions.