Wooden case with ray skin
France, 1770. Wooden case covered with ray skin (Galuchat) with trefoil shape. The interior is lined with salmon cloth, for 6 bow spectacles. With gold hinge.
Trilobal boxwood case
Venice, 1680. Trilobal boxwood case for bow glasses. Both sides are inlaid with a medallion bearing the letters NBP. Two spectacles can be accommodated within. Whalebone bow glasses in it.