There are several cases of "Admor shelita" or "Admur, shelita" in the NAF, but the term has been used in  there only as  a  ref.
It's okay for  two  refs  to  be identical on  different records. You don't even have to  make  one  of  them  a  5XX.
It would be nice if we could make one or more of them more distinctive, but it's  not *required*.

Of  course,  like  "Admor mi-Pitsburg," this probably should not  have  a  $c.   That  being  the  case, "shelita"  should  be
capitalized (if  we really want it  in  the heading at all).