1999 International Year of Older Persons PNC. The United Nations has designated 1999 the International Year of Older Persons. 'Australia-towardsa society of all ages' is the overall theme for the Year in Australia. The theme recognises the importance of fostering inter-generational activities and understanding to create a balance between tradition and innovation in economic, social and cultural development. Featuring Commemorative $1 coin and two 45c stamps. Please contact Adelaide Exchange Jewellers to find out more on this item.