Police Scotland can confirm that missing person Peter Edwards was seen to get off a bus in Stonehaven on Tuesday, November 1.
It is understood Peter arrived in Aberdeen around 12pm on Tuesday and then took the 2pm bus to Stonehaven arriving at 3.20pm in Barclay Street.
Peter is described as 5ft 9" in height, balding with a grey beard and sideburns and gold rimmed glasses. When last seen he was wearing a long sleeved grey shirt, black tank top jumper, tie, grey trousers and black leather shoes.
He speaks with an American accent.
There is concern for Peter's welfare and officers would like to hear from anyone who has seen him or has any information on his whereabouts.
Officers are carrying out door to door enquiries and reviewing CCTV in effort to trace Peter.
Anyone with information should contact Police Scotland on 101.