These two! Found together and offered together, so that they might go one sparring with one another for eternity! I've found documentation of a few similar out there--some attributed to Bergmann, Austria, some to the German company Heyde, others to the Soviet maker Kasli, all 1930s or earlier. I'm not sure, no marks that I can see, and they appear made of lead to me. Pretty fun, and I love the aging to the paint and the way they stand resting on their long, whip-like tails.
Larger: 3 5/8 t. Smaller:2 3/4 t. Larger has lost some of one horn, which seems right, and both have lost some paint.