A Miller beer can from the late 1930s; note opening instructions (OI) on the back of the can. BCCA members collect and preserve items like OI cans for their rarity and historic value.
<a href="//commons.wikimedia.org/w/index.php?title=User:Porterhse&amp;action=edit&amp;redlink=1" class="new" title="User:Porterhse (page does not exist)">Porterhse</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>