cover 3c Green (158), well tied by bold perfect strike of Skull and Crossbones fancy cancel on neat commercial cover with 'Auditor General's Office, Harrisburg, Pa.' printed corner card and 'Harrisburg, Pa. Nov 28,' c.d.s., stamp with natural s.e. at L., cover slightly reduced at R., an extraordinarily bold extremely fine strike of this very scarce and desirable fancy cancel, with 1990 P.F. certificate photo