Tristan, that is a really sharp example of that Fallow Deer by Karner. Looks right at home with your herd of very fine deer figurines! Congrats on a nice find.
Alas, I haven't had much luck with finding any worthy German figurines of late. However, in the spirit of making a contribution to the board I'm dusting off a photo of an oldie but a goodie from my collection that I posted on a previous, and now defunct, forum.
This large rearing stallion was sculpted by Karl Tutter for Hutschenreuther. It was also made with a nude maiden rider and occurs in uncolored white, dappled gray (as shown), and chestnut brown (very rare) colorations.
Enjoy,
T.
