This card came to us from Germany. The note on the back says "Grusse ans Bochum, linw Stadt mitten im Ruhrgebiet"
In my non-german mind this translates to ~ grass and {something} live street with in Ruhrgebiet
When I google it, I get ~ Greetings to the Bochum, in the ruhr Area city Linz
Hmm.. It's a mystery as the girls would say.
When I google Siedlung Teutoburgia from the front of the card, I get the Settlement Teutoburgia also known as Teutoburgia Garden City, a mining settlement in Bornig. The picture on the card is the Teutoburgia settlement with the shaft frame of the eponymous former colliery in the background.