Brunsviga MB
Very common half-size version of the standard model B, or "Brunsvigula". Any of these machines I've seen rust like crazy and don't hold paint (or in this case, even comma indicators), but it works flawlessly even after all these years. Many later refinements are evident in this machine - it has all the interlocks, input register clearing by wingnut, and a tabulator for shifting the carriage one place at a time.