12, 12b Registered cover from Culebra to Philadelphia, Nov 1906, franked w/ V pair, bottom stamp #12b w/ "ZONE" in antique type; tied by generic cancel, cover has Empire, Cristobal, New York and Philadelphia transit marks; also has Cristobal registration label FX-CZ1 w/ Scott CV $400 not counting premium for variety; some light foxing and wrinkles, F-VF (Image)

Est. $150-200 SE