Wall advertising for <a href="https://en.wikipedia.org/wiki/Mazda_(light_bulb)" class="extiw" title="en:Mazda (light bulb)">Mazda</a> batteries, a  <i>Compagnie Industrielle des Piles Électriques</i> (CIPEL) production, first half of 20th century
<a href="//commons.wikimedia.org/wiki/User:Dvillafruela" class="mw-redirect" title="User:Dvillafruela">Daniel Villafruela</a>.
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>.