WW1 American Army Officer of Engineers Collar Insignia

A set of Officer's collar insignia, comprising of the Engineers Castle badge in pin back and the U.S. letters also pin back. These are English made pieces although not maker marked, good quality strikes.

Castle measures 1 1/4" across x 7/8" tall with the U.S. letters 1 1/4" x 5/8"

Code: 51831