Shaded Advertising Covers. 4 covers; including well centered 2¢ black, F. Grill (#93, tiny perf tear) on gray American Meter Co. drop cover, gray Charter Oak Fire & Insurance Co., Hartford, Ct. ad on #65 cover (pulled perfs), 3¢ Banknote on red illustrated Mutual Assurance Society of Va., Ricmond, Va. and a illustrated bicolored S.A. Woods Machinery manufacturer shaded ad cover, Very Fine overall. Estimate  $150 - 200. $0 (Image)