Details
unused Block of Four Block of four [17-18/21-22], marginal at left, position [21] showing "LONG ISLAND" shifted to left, unused; insignificant wrinkle, fine and extremely rare.
Further details
Note: The block of twelve in the National Postal Museum consists of the top three rows of the sheet, positions [1-12]; the pair in the Royal collection consists of positions [13-14]; this block is the only other multiple.