This is an excellent original period piece, Army Corps of Engineer's insignia logo, bears the stamped Amico on back which authenticates age. Measures 1 1/8 in x 3/4 in
https://www.usace.army.mil/About/History/Historical-Vignettes/General-History/090-Corps-Castle/
Strength, pride, heraldry, prestige, and honor. The castle remains the premier symbol of the U.S. Army Corps of Engineers. The medieval castle is inseparably connected with fortifications and architecture. In heraldry, the castle and the tower are often used on coats of arms. In this country the term “castle” has been applied to the strongest of our early fortifications such as Castle Pickney in Charleston, South Carolina, and Castles Williams and Clinton in New York Harbor.
The Corps Castle is a highly stylized form without decoration or embellishment. The Army unofficially adopted the castle to appear on the Corps of Engineers’ epaulets and belt plate in 1840. Soon afterwards the cadets at West Point, all of whom were part of the Corps of Engineers until the Military Academy left the charge of the Chief of Engineers and came under the charge of the Army at large in 1866, also wore the castle on their cap beginning in 1841. Subsequently, the castle appeared on the shoulder knot, on the saddlecloth, as a collar device, and on the buttons. Finally, in 1902, the castle was formally adopted by the Army as the insignia of the Corps of Engineers. Although its design has changed many times since its inception, the castle has remained the distinctive symbol of the Corps of Engineers.
More information here:
https://en.wikipedia.org/wiki/Corps_Castle
Materials: metal.
