Tram trailer built by <a href="https://en.wikipedia.org/wiki/Sandvikens_Skeppsdocka_och_Mekaniska_Verkstad" class="extiw" title="en:Sandvikens Skeppsdocka och Mekaniska Verkstad">Sandvikens Skeppsdocka och Mekaniska Verkstad</a> in Helsinki tram museum
<a href="//commons.wikimedia.org/wiki/User:A333" class="mw-redirect" title="User:A333">Antti Leppänen</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>