The Björketorp Runestone lacks names and is raised some tens of kilometers from the others. However, it is beyond doubt that the Björketorp runestone is connected to them, because in addition to the special runic forms, the same message is given on the Stentoften Runestone.
The Björketorp Runestone differs in that it lacks names, but it shares a connection with the others due to the identical message conveyed on the Stentoften Runestone, which also features unique runic forms.