Rare Belgian architect lamp "ERPE"

Rare "ERPE" lamp from Belgium. Originally produced by Ets Ritzen & Penners (later renamed ERPE after its creator "René Pierre"). Manufactured between the 1920s and 1950s. Lacquered aluminium shade. Upper part made of Bakelite with a switch directly integrated into the socket. Fully functional and rewired. DIMENSIONS: Fixed arm: 60cm. Articulated arm: 70cm. Shade diameter: 19.5cm. Maximum opening of the shade: 3.5cm.