
    Commonwealth v. Mack, Appellant.
    Argued September 13, 1971.
    
      George T. Guarnieri, for appellant; Milton M. Stein, Assistant District Attorney, with him James D. Crawford, Deputy District Attorney, Richard A. Sprague, First Assistant District Attorney, and Arlen Specter, District Attorney, for Commonwealth, appellee.
   Judgment of sentence affirmed.  