An uncommon instrument of foetal destruction. This was used to perform a craniotomy on the foetus as the preliminary process in collapsing the skull which would allow subsequent extraction.

The instrument had a pelvic curve allowing the crown to be placed over the head. Turning the handle whilst applying pressure rotated the cutting edge of the crown, effectively trephining the skull. In excellent condition throughout, noting some old corrosion at the base of the crown, mild wear to the plating in parts (see pictures) and a few minor scratches at the base of the handle.

• From the Phisick collection