
    August 1, 1980.
    428 A.2d 667
    Commonwealth v. Alston, Appellant.
    Submitted December 6, 1979.
    Jay R. Levenberg, for appellant; Eric B. Henson, Assistant District Attorney, for Commonwealth, appellee.
    
      Before BROSKY, WICKERSHAM and EAGEN, JJ.
    
    
      
       Chief Justice Michael J. Eagen of the Supreme Court of Pennsylvania, is sitting by designation.
    
   Judgment of sentence affirmed.  