10c Orange, Panama-Pacific (400A). Bottom plate no. 6143 block of six, top stamps small h.r., bottom stamps lightly hinged, vibrant color, few reinforced perf separations

VERY FINE. A SCARCE AND ATTRACTIVE PLATE BLOCK OF THE 10-CENT ORANGE PERF 12 PANAMA-PACIFIC ISSUE. PROBABLY RARER THAN THE 10-CENT PERF 10 PLATE BLOCK.

An examination of catalogue values and a search of past auction catalogues demonstrates the rarity of the 10c Orange Perf 12 as a plate block

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