The No Right Turn sign used in MUTCD 1961 and before.  Due to the low quality of this uploaded photo, it is not recommended to use in an article.
<a href="//commons.wikimedia.org/wiki/User:Dangeredwolf" title="User:Dangeredwolf">Dangeredwolf</a>
2019-02-28
<span class="int-own-work" lang="en">Own work</span>