An engraved seal inside the tower of the Montauk Point Lighthouse at Montauk Point State Park in Montauk Point, New York. A similar seal contains members of the United States Lighthouse Board in charge of this lighthouse in 1860. However the message here is barely visible.
<a href="//commons.wikimedia.org/wiki/User:DanTD" title="User:DanTD">DanTD</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>