Thailand 50 Baht Banknote, 2018, P-136a, UNC

The Thailand 50 Baht banknote is part of the 2018 issues. It measures 144 x 72 mm. The obverse side shows H.M. King Vajiralongkorn, Rama X, in the uniform of the commander of the Royal Thai Air Force. The reverse side features King Nangklao, Rama III, and a Chinese junk, & King Mongkut, Rama IV, and Khao Wang (an observatory to study the stars). This banknote uses a windowed security thread and contains a watermark with a Rama X and electrotype 50 design.