GG-W-113 U.S 1960s Pattern Military Watch with Plexiglass/Acrylic Crystal (automatic)

In October 1962 the US Government set down a specification for infantry watches which became known as GG-W-113 this was MIL-W-3818B which replaced MIL-W-3818A from March 1956. The full specification details are at the following link www.shinall.com/pdf/watch/MIL-W-3818B_Sepcifications.pdf