Jack Reynolds, of Chesterfield, UK, went under the needle on his 104th birthday at local tattoo shop "Pete Who's."
The centenarian had "Jacko 6.4.1912" tattooed on his upper arm. The ink shows his nickname, in his own handwriting, and his birth date April 6, 1912.
Before getting his record-breaking tattoo, Reynolds told "Good Morning Britain" that he was "apprehensive," but "looking forward to it."
His daughter Jayne Goodwin, 55, and grandson Shane Spencer, 35, also got the same tattoo.
"My emotions, they were just all over the place," Goodwin said prior to her father receiving the acknowledgment. "I had been through a blubber at one point, but this guy was just as cool as a cucumber."
Guinness World Records adjudicator Mark McKinley surprised Reynolds with his certificate on April 7, while he was surrounded by his family. The category of the World’s Oldest Person to receive a Tattoo had not been previously set, according to Guinness. Reynolds is the first to hold the record.
While getting inked, the former railway line foreman raised $3,400 for independent charity Ashgate Hospicecare.
Reynolds joked that his tattoo "shows off his muscles."