A locked safe in Alberta, Canada, was opened by a visitor's lucky guess. He tried 20-40-60 and it opened for the first time in around 40 years. The article does not explain what brand the safe is, only that the dial seems to go from zero to 60. They think it was purchased around 1907.

https://www.bbc.com/news/world-us-canada-48477081

You can also search for "Vermilion Heritage Museum" and "safe".

Click image for larger version.  Name: alberta-safe-opened-vermilion.jpg  Views: 7  Size: 53.5 KB  ID: 21422