This layout appears in the Arnold rapido track plan book from the late 1960’s. The English language version is interesting because of the translation by Eric LaNal, who understood both German and model railroading. The layout measures 30” by 36” (75 cm by 90 cm), and although small, trains appear to go further because of the twisted oval shape.
Also used on this layout are the Arnold modular buildings, which I love. In fact, I like them so much that went a little overboard and squeezed in as many as I could. As a result, the small town shown in the drawing above because a little bigger by adding the bigger station building.