5¢ airmail stamp c12
<a href="https://en.wikipedia.org/wiki/United_States_Post_Office_Department" class="extiw" title="w:United States Post Office Department">United States Post Office Department</a>
<span class="int-own-work" lang="en">Own work</span> - <a href="//commons.wikimedia.org/w/index.php?title=User:SueStamps&amp;action=edit&amp;redlink=1" class="new" title="User:SueStamps (page does not exist)">SueStamps</a>