Advertising poster

Advertising poster of Państwowe Zakłady Tele i Radiotechniczne (State Tele and Radio Technical Works) in Warsaw, depicting an offer to sell "ECHO" receivers. The poster is dated 1937/38. The following radios are indicated: "ECHO" 127 and "ECHO" 124 for alternating current, and "ECHO" 132 and "ECHO" 133 battery operated, and "ECHO" 121 for direct current. Below you can see the advertising slogan "Echo w domu – troski z domu" (Echo at home - worries far from home). The offer indicates the ability to purchase receivers in instalments spread over a maximum of 15 months.