Journal box of former K.P.E.V. freight car (Königlich Preußische Eisenbahn-Verwaltung, Royal Prussian railway administration), later used under a working car of Hamburg port railway, today Freunde der historischen Hafenbahn e.V.
<a href="//commons.wikimedia.org/wiki/User:KaiBorgeest" title="User:KaiBorgeest">KaiBorgeest</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>