Post offices across the country had swarms of visitors on

Friday was the King’s 65th birthday.

All editions of the first stamp issued in his reign were sold within a short time.

Bang Rak Post Office in Bangkok reported that 500 sets were sold within an hour.

The stamp features His Majesty’s full-length portrait against a yellow background, the colour associated with Monday, his day of birth.

His initials and emblem appear in the upper right corner. The stamp has a face value of Bt10, but is sold with a special envelope for Bt20 and is also available in a full sheet of 10 stamps.