Starting in 2012, Olf (Braunschweig) and Lupin (Hannover) stuck hundreds of stickers, posters and tiles in Hannover. Most of this work has been destroyed. Murals came later, many of them are still well preserved. On the front and on the backfront of this building you can find artworks by Olf + Lupin, on the left and on the right side artworks by KaLa and SAS. On the last pic you see Olf (on the right) + Lupin (on the left) with the owner of the liitle store. I found this photo in the internet.