This button was originally intended for use for Royal Navy Captains & Commanders, but was adopted by the U.S. during the American Revolution, for American Officers serving in the Continental Navy. There was still commerce going on between the colonial colonies and English manufacturers, so it would have been normal for an American garment maker to order these buttons and use them on Continental Navy Officer's uniforms.
This button's pattern depicts a Fouled Anchor with a V-Shaped Crown. There is a Rope Coming off the Anchor's Top Ring on the left hand-side. The rope goes under a straight stock with Squared Ends, and then over and under the shaft. Then goes under the left fluke, and wraps under the pointed crown, and then goes up under the right fluke, and off the side of the button. The anchor's stock has vertical lines in the shaft, crown, and flukes. The stock has horizontal lines. The crown and flukes have a Wide Pointed "V" Shape. It has a beautiful chocolate brown patina on its exterior faces with some of its gold gilt remaining inside the anchor and on the back.