That particular emblem has been in use on US Marine Corps buttons ever since 1821, continuing even to the present day. I cannot be absolutely certain from looking at your photos, but because your US Marine Corps button APPEARS to have a "low-convex" (low/nearly flat) front, it was manufactured sometime in the 20th-century. The 19th-century ones had a distinctly higher "dome" shape, and the "raised border" around the eagle was less high-raised than on your button.