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Mark II experimental

The coil has a rounded M shape. One side has three bobbles, while the other is slightly curved and encircled by 2 copper pieces. The mid-section of the coil is wound around with copper. A blue retrieval thread is attached to the end of the coil.

Inventory number: 2365
Material: plastic, copper
Dimensions, in cm: 3,1 x 2,5 x 0,2
Date: March 1990
Condition: good
Donor: Willem A.A. van Os