Morten St George Theory

[Koen G]

The word "Bock" does not necessarily denote a goat, it stands for the male animal. It could also be a ram. Possibly the same as in the signs of the zodiac.

Example for Bock in german :, Steinbock, Ziegenbock, Rehbock, Schafbock .... usw, einfach männlich. Schaf, Schafbock.

That's true, the modern Dutch for Capricorn is still "steenbok". The word "bok" in isolation would most often be interpreted as the male of the goat though. But it's possible that in the context of whoever wrote that message in the VM, one of the other meanings was primary.