Coil with a sealed upper end which is wound round with copper wire. In the middle, two ‘branches’ lead away from the coil. The central shaft is also wound round with copper.


  • Inventory Number: 1748
  • Dating: vor 2004
  • Material: plastic, copper
  • Size in cm: 4 x 2,6 x 1,2
  • Condition: very good
  • Donor: Dr. Willem Beekhuizen