A Patek Philippe Calatrava 18k gold men’s watch with a 14k band; a Tiffany & Co. diamond bracelet set in 18k gold and platinum; and a 1.70-carat platinum emerald cut diamond engagement ring are just a few of the tantalizing items up for bid in Ahlers & Ogletree’s Fine Jewelry, Watches & Luxury Accessories auction scheduled for Thursday, April 24th, at 10am Eastern time.