Original U.S. WWI to Post War Large US Army Type 1 & 2 Collar Discs and Uniform Insignia Lot - 62 Items U.S. Navy Engraved to the 4th Marine

Engraved to the 4th Marine Division

The barrel is faintly marked 1863 on the breech

so it is definitely WWI period

The underside of the rim is stamped HS / 392

Virginia during April

Original U.S. WWI to Post War Large US Army Type 1 & 2 Collar Discs and Uniform Insignia Lot - 62 Items U.S. Navy Engraved to the 4th MarineOriginal Items: Only One Lot of 62 Available. The first collar discs were one inch in diameter with raised edges, a threaded post and screw back for attachment. They were made of solid, dark finished copper with a color range from true bronze to a blackish brown. It was commonly held that gilt discs came into existence in 1921 as part of a series of changes to enlisted men collar insignia. Type I DiscsOne piece collar discs with smooth, fine dotted or