1.5 Euro Siemens and Halske

Siemens & Halske was founded in Berlin in 1847 by Werner von Siemens and Johann Georg Halske, with its first major contract being the construction of a telegraph line from Berlin to Frankfurt — then the longest in Europe. The Spanish connection is direct: the company built the first telegraph network across the Iberian Peninsula in the 1850s, a project that drew Spanish royal patronage and cemented the firm's Continental reputation before it had existed a decade.

This piece belongs to Spain's long-running "Joyas de la Numismática" program, which has issued non-circulating legal tender in odd denominations since the 1990s specifically to sidestep collector market fatigue with standard euro denominations.