1909 non-denominated gray green Parcel Post, complete sheet of two imperf. at top, minor perf. separations, one of very few sheets remaining intact Estimate: $500
1909 non-denominated gray green Parcel Post, complete sheet of two, marginal folds and perf. separations, one of very few sheets remaining intact (cat. $800 as singles) Estimate: $500
1909 non-denominated gray green Parcel Post, complete sheet of two imperf. at top, minor perf. separations, one of very few sheets remaining intact Estimate: $500
