Vintage Brass U.S. Army Corp of Engineers Survey Mark "D"

The Vintage Brass U.S. Army Corp of Engineers Survey Mark is a highly sought-after collectible item that represents a piece of history in the field of engineering. This mark, likely made of brass and sporting the emblem of the U.S. Army Corp of Engineers, would have been used in surveying activities to mark off boundaries or important points. With its unique design and historical significance, this piece would be a valuable addition to any collection focusing on engineering or military history.