Muddy Waters' 1956 Martin 0018-E guitar (Rock and roll Hall of Fame, Cleveland, OH). Waters played this guitar at the Newport Folk Festival 1968.
<a href="//commons.wikimedia.org/wiki/User:ClaudeH" title="User:ClaudeH">Claude Humbert</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>