Modified Medieval Era Dagger Identification

[DawnST]

This piece is listed as being found in Germany and is supposedly a lance head from the medieval era. However, I have doubts about this, and I’d like to know more about what type of weapon it is and when it might have been made. It is 35.5 cm long with a 21.5 cm long blade. It has a square blade, with a perpendicular cross guard. It also has a large socket for being inserted on to a pole. It looks like it might have been modified to include the cross guard and socket; you can clearly see the separation of metals where it looks like a sheet of metal was overlapped and wrapped around the end to form the socket. Research has suggested that it’s too short to be an ahlspiess (awl pike), and the long thin cross guard seems unusual for a pole arm. I’m wondering if it might be a modified stiletto dagger (explaining the square blade), or a shorted awl pike (with an odd cross guard since they usually seem to be round). Has anyone come across something similar?