Police have renewed appeals for information after Philip Pearce was reported missing from the Kings Mill area of Mansfield more than seven weeks ago on December 18, 2018.
Mr Pearce is decribed as 5ft 7ins tall, of a slim build with a shaven head.
He was last seen wearing a green padded jacket with a fur lined hood, dark coloured bottoms and trainers.
Anyone with may have seen him, or has information should contact Nottinghamshire Police on 101 and quote incident number 592 of December 18.
Alternatively call Crimestoppers anonymously on 0800 555 111.