An Hermès black patent crocodile Birkin bag, 2003. Photo Bonhams

With gilt hardware, padlock and keyfob, rain cover, dust cover and box, 35cm wide. Lot 311^Y. Estimate: £8,000 - 12,000 / €9,700 - 15,000 / US$ 13,000 - 19,000

An Hermès dark brown matt crocodile Birkin bag, 2003. Photo Bonhams

With gilt hardware, padlock and keyfob, rain cover, dust cover and box, 34cm wide. Lot 351^Y. Estimate:  £8,000 - 12,000 / €9,700 - 15,000 / US$ 13,000 - 19,000

An Hermès dark brown matt crocodile Birkin bag, 2008. Photo Bonhams

With silver palladium hardware, padlock and keyfob, rain cover, dust cover and box, 30cm wide.  Lot 348^Y. Estimate: £8,000 - 12,000 / €9,700 - 15,000 / US$ 13,000 - 19,000

Bonhams. 16 May 2012 11 a.m. London, Knightsbridge. Jewellery Including Fine Hermès Handbags