That looks to me like a character in another font or, perhaps, a non-ASCII character in the same font. What do you get if you select the character and run the following macro:
Code:
Sub GetChar()
Dim SelFont, SelCharNum
With Selection
With Dialogs(wdDialogInsertSymbol)
SelFont = .Font
SelCharNum = .CharNum
End With
End With
MsgBox SelFont & vbTab & SelCharNum
End Sub