https://trc-images.nl/collection_images/hires/2018/2018.1680a-c.JPG#\\TRC-SERVER\TRCSharedWork\TRC Database\collection%20photographs\2018.1600\2018.1680a-c.JPG#
Set of three matching hat pins made from silver metal and black plastic decoration - probably in imitation of jet generally used at this time.
https://trc-images.nl/collection_images/hires/2018/2018.1680a-c_2.JPG#\\TRC-SERVER\TRCSharedWork\TRC Database\collection%20photographs\2018.1600\2018.1680a-c_2.JPG#
This set of three hatpins matches a brooch (TRC 2018.1681) so perhaps would have been worn together.