Plate Block Hoard, 1920-1960. Two large cartons filled with plate blocks, neatly identified in envelopes stuffed with glassines, much premium material here including 1920's-1930's commemoratives, Washington Bicentennials, Army Navy, Baseball Centennial, Famous Americans complete run including 10¢ plate blocks all in duplication, National Parks & Farley imperfs including souvenir sheets, Prexies removed, Liberty series to $1, and much more; most post office fresh. Estimate  $1,500 - 2,000. $0