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it is a genuine unused, o.g., previously hinged, block of four, (the left stamps never hinged), the top right stamp with a natural paper inclusion on the gum side.
it is a genuine unused, o.g., previously hinged, block of four (the bottom right and top stamps never hinged), the bottom stamps with a natural straight edge at the bottom.
it is a genuine unused, o.g., hinged, left margin block of four (the top right and bottom stamps never hinged), the bottom right stamp with a perf disc indent.