When you see an old page of any website it is time to delete your cache!
Search 'how to delete cache' in your browser.
Periodically it is better to clear the browsing history and cache.
When you browse the internet, the pages are saved by your browser. This is so that next time you visit the same site, everything loads quickly. In case the site has done changes, you will not be able to see them.
In this case you can use F5 to refresh. Or use Ctrl and F5 to force a refresh. Should these fail then clear your browsing history and cache (See above).
The first stamp to commemorate the Aga Khan III's Birth Centenary was issued by Pakistan on 2nd June 1977 . In the same year the Aga Khan Award for Architecture was established by His Highness the Aga Khan IV (Prince Karim), grandson of Aga Khan III. Whenever an award is granted for the best Architecture, stamps are issued by the respected countries to commemorate the event.