Hello friends of the light, I am happy that I have brought a wall sconce Blanchard back to life, through the help here in the forum that has become possible, thanks for that! There was a lot to do. The tank was badly damaged and had to be cleaned with a sandblast and closed with a flap. The burner has holes that need to be closed. The nozzle with the cleaning needle must be renewed, the mixing tube is also defective. My lamp friend A.Peuker gave me a glass. Thanks Andreas! Seals, etc., must be replaced. But now it seems wonderful. Here are the pictures. I wish you all a nice evening.