The back of a mug that was given to the engineers of the Numbus II Mission. It reads:
<p>Nimbus II
RCA Under contract to NASA's Goddard
Space Flight Center Supplied–
APT
AVCS
Power Supply
HRIR Recorder
HAX
</p>
Clock Receiver
<a href="//commons.wikimedia.org/wiki/User:Acebarry" title="User:Acebarry">Acebarry</a>
<span class="int-own-work" lang="en">Own work</span>