2c Black (73). Block of ten and pair, the block s.e. at right, tied by grids on part of heavy parcel wrapper to Hartford Conn., manuscript "March 31/66", back with part label affixed at a later date, with Great Britain 2-1/2p and 5p stamps tied by circular datestamps, stamps defective, still unusual franking, the largest recorded used multiple of the Black Jack is a block of twelve

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