*483Concurring Opinion by
Mu. Justice Roberts:I concur in the result because appellant was properly warned of his right to have counsel appointed free of charge.
Moreover, while 1 express no view as to the merits of appellant’s claims regarding the corrupt source charge, I agree that those issues may not now be asserted. Appellant failed to raise these issues at trial or in post-trial motions and, thus, may not raise them here for the first time. See Commonwealth v. Agie, 449 Pa. 187, 296 A. 2d 741 (1972); Commonwealth v. Donovan, 447 Pa. 450, 291 A. 2d 116 (1972) ; Commonwealth v. Jacobs, 445 Pa. 364, 284 A. 2d 717 (1971).