cover 4c Dark Brown, 6c Claret Brown, imperforate (269a, 271b), single of each, immense margins all around, tied by Boston, Mass. double oval registry pmks. on very fresh 1902 registered cover to Washington, D.C., couple purple registry pmks., very fine and choice, quite scarce, ex Gibson, with 1990 P.F. certificate, (while now listed in the proof section, most specialists know that these imperforates were used contemporaneously and fully accepted as postage) photo