I have a Winchester mid range tang sight that is marked "Pat Mar 30 86" on the bottom.  The small spring that holds the staff in the correct upright position is broken and I don't have the end that holds the staff,  I've got the end with the screw hole and the 4-40 screw.  If I could buy one it would be great.  Failing that, a picture of of one would be a big help.  Also, isn't there a guy that is possibly making sights that are the same as the old ones.  I can't remember his name or contact info.
Thanks,  Bob