Sotheby's : London, 3 and 4 October 1996 : Important Clocks, Watches, Wristwatches, Barometers, Mechanical Music and Scientific Instruments /

Eitemau Tebyg

• Sotheby's : London, Thursday 1 October 1998 : Important Clocks, Watches, Wristwatches, Barometers and Mechanical Musical Instruments /
  Cyhoeddwyd: (1998)
• Sotheby's : London, Wednesday 24 May 2000 : Important Watches, Clocks, Barometers, Mechanical Music and Scientific Instruments /
  Cyhoeddwyd: (2000)
• Sotheby's : London, Thursday 26 February 1998 : Important Watches, Clocks, Barometers, Mechanical Music and Scientific Instruments /
  Cyhoeddwyd: (1998)
• Sotheby's : London, Tuesday 9 November 1999 : Important Watches, Clocks, Barometers, Mechanical Musical and Scientific Instruments /
  Cyhoeddwyd: (1999)
• Sotheby's : London, Wednesday 1 October 1997 : Fine Clocks, Watches, Wristwatches, Barometers and Mechanical Musical Instruments /
  Cyhoeddwyd: (1997)