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Cu 7 with insertion device

Copper 7 coil with a plastic thread. In addition, a small tube and a sliding part with a flat, round handle. Mounted on black cardboard.

Inventory number: 1769
Material: plastic, copper
Dimensions, in cm: 3,5 x 2,5 x 0,3
Condition: very good
Manufactor: Searle Laboratories
Donor: Robert Snowden