Registered cover from Germany

I received registered cover from Germany. Cover was prepaid, but three stamps are added for additional postage. Prepaid stamps are from series Germany's Most Beautiful Panoramas, issued on 01.07.2015. Chiemsee lake is on stamps. Below that is three real stamps: First is definitive stamp Common bluebell (Hyacinthoides non-scripta), issued on 08.06.2017. Second is Art glass by Theo Baumann, from set of two stamps German Designs, issued on 08.12.2016. And last stamp is Vitamin C, from set Microworld, issued on 13.07.2017. Inside cover was two beautiful Austrian stamps, and you can see them in my previous post.

Thank you very much Lars!