Model: Tourbillon Regulator, Ref: 5307BA/12/9V6Case No: 2989T Year: 2007Calibre: 587Dial: Silvered on guilloche engine turned background, subsidiary chapter time ring with Roman numerals indicating the hours, outer minute track, visible tourbillon carriage below, signedCase: 40mm, 18k yellow gold case, glazed display case back revealing the highly decorative engraved movement, pierced and engraved rotor, signedStrap: Endangered species, yellow gold Breguet deployant clasp, additional yellow gold Chopard buckleAccompaniments: Presentation case, certificate of origin confirming original date of purchase on 9th June 2007