Technical Observations: The surfaces of both 2002.315 and 2002.316 are dark brown and black, and there are light gray burial accretions in many areas. The pin mechanism in both locks is frozen in place. The pin of 2002.316 is iron and largely mineralized. Its two halves have split apart at the rear but are tight together at the front of the horse and at its head.
The horse halves were probably cast by the lost-wax process, but a sand-casting process is also possible. In each case, the two halves were separately cast, joined together, and then finished as a unit. The join on 2002.316 at the nose of the horse, where it is tight, has a light colored line, which may be evidence of a lead solder join. A similar lock, 1995.1164, has white metal all along the join surface and indicates that a lead solder may be typical. The pin of 2002.315 is copper alloy, but some rust is visible at the rear of the horse and magnetic attraction indicates either that an iron retaining pin may go through the main copper alloy pin or that the entire internal portion of the main pin is iron.
Henry Lie (submitted 2005)