Stephen Mills and his family at the Vermilion Heritage Museum in Vermilion, Alberta, in May. (Chris Stead-Courtesy of Stephen Mills)

A man has spoken of his “total disbelief” after opening a safe that had been locked for 40 years on his first try.

Canadian Stephen Mills went to Alberta’s Vermilion Heritage Museum last month.

One of its attractions is a 2,000lb (907kg) safe that had not been opened since the late 1970s.

While being shown round by guide Tom Kibblewhite, Mr Mills decided to have a go at opening it “for a laugh”.

Noticing the dial numbers ran from zero to 60, he decided to try 20-40-60.

“I cracked it, it opened, and it was just total disbelief,” he told CBC Edmonton.

“Tom was equally surprised, the whole family was. It was great. The kids got excited, they were like ‘we beat it, we beat the code!”

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