A pair of diamond and gem novelty clip brooches, each modelled as a toucan, with blue chalcedony body, diamond set head and red stone eye (one chalcedony cracked).

Recommended features

• • 

  • 5 Rolex watches to excite collectors

    Watch specialist — and watchmaker — Patrick Hofstetter casts his eye over a selection of highly-desirable timepieces offered in our Rare Watches auction in Geneva on 14 May

• • 

  • 5 reasons watch collectors love the Rolex Daytona

    Christie's specialist Patrick Hofstetter explains the five key attributes behind Rolex Daytona's enduring popularity with collectors