Prime Minister Lee Hsien Loong posted a photo of his new PAssion Silver Concession Card on Facebook and Twitter yesterday, joking that he is "now a certified senior citizen".

PM Lee, who turned 64 in February, added that he is "looking forward" to using his card.

Netizens responded with jokes of their own, along with good wishes.

Facebook user Elaine Chan said: "Dear PM, you may possibly be one of the very few to wear (a) suit and tie for (a) picture on such a card."

The new PAssion Silver Concession Card, which was launched on Dec 4 this year, merges the existing Senior Citizen Concession Card with the PAssion card.

It is a joint initiative by the Ministry of Health, Ministry of Transport and People's Association (PA), and is supported by the Land Transport Authority and Singapore Business Federation.

The card is given free to all Singaporeans who are 60 and older, and provides concessionary fares on public transport as well as discounted rates for PA community clubs' courses, activities and facilities.

Other benefits include 3 per cent discounts at Giant supermarket outlets on Tuesdays and at Cold Storage stores on Wednesdays.

From Dec 5 this year, the card is automatically mailed to the home addresses of those who are currently 60 and older, and who are existing Senior Citizen Concession Card holders.

Those who do not have Senior Citizen Concession Cards will receive a letter by Jan 31, 2017, requesting a photograph submission before they can receive their PAssion Silver Concession Cards.

Seniors who turn 60 next year will receive invitation letters after they become eligible.