cross-posted from: https://lemmit.online/post/6454782
Today I found two nazi nitrogen bottles at work. The swastikas were filled in post-war.
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The original was posted on /r/mildlyinteresting by /u/PanPun98 on 2025-07-30 22:50:20+00:00.
That is when the retest is due. You can see at the bottom the latest one is 08. So it’s been in circulation for 70 years. Black is nitrogen in international standards. So very believable.