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Hong Kong Triangles

or the Ahmed IUD from Pakistan

2 ‘Ahmed IUDs’ in form of a triangle, 1 with a yellow thread, 1 with a black thread, mounted on black cardboard. 
Labelled as Hong Kong Triangles. This coil by Mary Aftad Ahmed is supposedly the only coil that was developed by a woman.

Inventory number: 1873
Material: plastic
Dimensions, in cm: 16,8 x 10 x 0,3
Condition: good
Artist: Mary Aftad Ahmed
Donor: Robert Snowden