Yesterday I got three postcards: one from the Czech Republic, one from Hong Kong and one from Austria.
The card from the Czech Republic shows a crane built of colour parts of the Merkur modelling system. The Merkur modelling system is a toy created in the early 20th century. It is based on belts and profiles of different shapes and lengths, made of painted sheet steel and containing a network of drilled holes. These parts are put together with bolts and nuts. It is successfully sold since the 1920s and is today one of the most popular Czech toys.
With a great matching stamp:
EUROPA (issued 06-05-2015)
Thank You very much Blanka!