This is an early 20th Century German postcard we have for sale - it is actually part of a lot of 2, combined with another similar (but not quite the same) postcard.
Actually I can't date this exactly, but it has the looks of an early 20th century card. It also has the look of a hand tinted card. There is a sheen around the edges that makes me think of a gelatin-silver photograph, but I don't know for sure.
It's a pretty card, with a little rhyme in German and I remember enough German to understand what it means. It does not rhyme in English.
Click on the title to go to the listing if you're interested.