The 71-year-old was last seen at a business in New Street, Frankston about 1.50pm on Sunday.
Police and family have concerns for his welfare as his disappearance is out of character.
Police have released an image of Graham in the hope someone recognises him and may be able to supply information on his whereabouts.
Anyone who sights David or who knows of his whereabouts is urged to contact Narre Warren Police Station 9705 3111.
Source: Victoria Police News – 19 June 2017
