1926 White Plains souvenir sheet. Tied by "Model Post Office, Sesquintennial International Exposition, Philadelphia, Pa." roller cancels on oversized registered Worden cover, reverse with two strikes of purple "Philadelphia, Pa., Registered, Oct 18, 1926" First Day of Issue Model Post Office Expo cancel; cover with minor corner nick at top left, otherwise Very Fine. Scott No. 630  Estimate $400 - 600. $0 (Image)

1926 White Plains souvenir sheet. O.g., never hinged, very well centered overall, bright and fresh, small tear in margin at lower right, otherwise Extremely Fine. Scott No. 630  $600. $0 (Image)

1926 White Plains souvenir sheet. O.g., never hinged (minor gum skips), well centered throughout, fresh and Very Fine. Scott No. 630  $600. $0 (Image)

1926 White Plains souvenir sheet. O.g., never hinged, nicely centered, bright and fresh, Very Fine, a choice sheet. Scott No. 630  $600. $0 (Image)

1926 White Plains souvenir sheet. O.g., never hinged, rich color, fresh and Very Fine. Scott No. 630  $600. $0 (Image)

1926 White Plains souvenir sheet. O.g., never hinged, very well centered throughout, bright and fresh, Very Fine and choice. Scott No. 630  $600. $0 (Image)

1926 White Plains souvenir sheet. O.g., never hinged, nice overall centering, fresh and Very Fine. Scott No. 630  $600. $0 (Image)

1926 White Plains souvenir sheet. O.g., never hinged, Very Fine and choice. Scott No. 630  $600. $0 (Image)

1926 White Plains souvenir sheet. O.g., never hinged (light natural gum wrinkle), bright and fresh, Very Fine. Scott No. 630  $600. $0 (Image)

1926 White Plains souvenir sheet. O.g., never hinged, rich color, fresh, natural paper wrinkle mostly in left margin, otherwise Very Fine. Scott No. 630  $600. $0 (Image)

1926 White Plains souvenir sheet. Neat Washington D.C. First Day of Issue duplex cancels, rich color, only a couple perf separations at top, Very Fine. Scott No. 630  $450. $0 (Image)