Front portrait of Prince Bhanurangsi Savangwongse surrounded by the inscription `Chom Phon SAR Pitula Chaivorapongsa Pimuk. Prince Bhanurangsi Sawangwongse`. Prince Bhanurangsi Savangwongse, son of King Rama IV of Siam, was born on January 11, 1859. He is best known as the founder of the Thai postal service.
