advertising changer used for promotional purposes by the Agfa brand,

Advertising changer used for promotional purposes by the Agfa brand, a historic German manufacturer of photographic films and chemicals for photography.
•Material: thick, pressed glass, with rounded corners and machined edges.
Function: almost certainly an advertising changer, very popular in the years of the industrial boom as a promotional object for offices, shops and premises.
Period: this type of object is typical of the 1950s-1970s, with a greater probability between the 1960s and early 1970s, a period in which advertising design was characterized by square shapes, bright colors and materials such as glass and metal. Furthermore, the Agfa logo used — with that typical diamond shape and cursive writing — was in use precisely in that period.