Few items in fashion can rival the enduring appeal of the Hermes bag, in its various iconic styles, for which women routinely wait months or years. Another route to acquiring one is in the sale Bonhams will offer next month in London of a private collection of 64 Hermes bags, known for their exotic skins. Featured items include a black patent crocodile Birkin bag, 2003 (est. $12,900-$19,400), and a fuchsia ostrich Kelly bag(est. $6,500-$9,700).The bags date from the 1950s through 2008, with other Birkins in various shades of togo leather, and Kelly bags in such skins as brown matt crocodile, and various shades of ostrich. The auction will take place as part of the Jewelry sale at Bonhams’ Knightsbridge outpost on May 16th.