Typically, I’ll always name my halfcards with the original name of the postcard from which it originates. This one had no name, but only a small mark saying “Echtes Edfot Photo T1100”.
On searching for Echtes Defot, all I found were lots of pictures of printers and this postcard of a church in Germany. Perhaps this was a German horse, or a test print for a printing company? Who knows.