Rob Jones and his wife were removing a toilet roll holder when they came across a cloth in the wall, according to Fox 5.
"We pulled the rag out and could feel something wrapped inside it. We were happy to find just the McDonald’s bag and not something worse," Jones told Fox 5.
Despite the fries' age, Jones said they didn't smell at all.
Jones posted the photos of the meal on Reddit under the username slamminsammy2109. Some users jokingly asked how the meal tasted and another used the term, "forbidden fries."
Jones responded in his Reddit feed, "We live close to one of the original locations in Crystal Lake, Illinois. Opened in 1959."
The 50s logo on the wrappers features McDonald's original mascot, Speedee, holding up a sign saying, "I’m Speedier" and "Custom built hamburgers."
Newsweek cited a 2016 Business Insider article clarifying the signature McDonald's golden arches weren't formally used as the fast-food company's logo until 1961.