2 Erco applied from the 1970s

Pair of erco appliques, Germany 1970. Silver metal wall frame and acrylic lampshades. The lights have a button on/off at the bottom and an e 27 connection. They have a burgundy fitting in Bakelite. The lights are labeled with an erco label and a label with the product number a3 691. And all the pieces are there. The total height is 24 cm, the length 13 cm and the width 11 cm. The dimensions of the lampshades are: height 21 cm and length X width 11 x 11 cm.