The poster for the international exhibition at the opening of the Simplon Tunnel shows Mercury, god of trade and traffic, recognizable by his helmet, and Vulcan, god of fire, trade and art, leaving the Simplon Tunnel and heading towards the shadowy city of Milan on the horizon, recognizable by its landmark, the Castello Sforzesco. In 1906, in celebration of the completion of the Simplon tunnel, admired by contemporaries as outstanding modern-day structural engineering and the longest mountain tunnel in the world until the end of the 1970s, a large exhibition was held there. Its focus was, according to the occasion, on means of transport. In addition, special exhibitions were presented, among others on health care, arts and crafts and the fine arts.
The poster belonged to the Dr. Hans Sachs Collection, which was restituted by the DHM to the heirs of Sachs in 2012. At an auction in 2013, several posters were acquired, including this poster.