This vibrant 2 Ch stamp from Bhutan was issued in 1974 to commemorate the Centenary of the Universal Postal Union (1874–1974). The design beautifully contrasts two eras of transportation, showing an 1884 steam locomotive alongside a modern Royal Mail electric train, symbolizing the progress of global postal services. Above, a postal dove carries a letter, while the UPU emblem marks the anniversary. A striking collectible that blends postal history, railway heritage, and Bhutan’s imaginative philatelic tradition. A must-have for collectors of UPU issues and train-themed stamps.