
    June 1, 1979
    417 A.2d 759
    Commonwealth v. Robertson, Appellant.
    Submitted March 12, 1979.
    Peter J. Mangan, Assistant Public Defender, for appellant; Sheryl Ann Dorney, Assistant District Attorney, for Commonwealth, appellee.
    Before SPAETH, HESTER and MONTGOMERY, JJ.
   Judgment of sentence affirmed.  