1852 Missent mail to Panama, folded letter dated July 27 from Le Conquet addressed to Guatemala, showing Italic dispatch postmark at upper right, alongside with matching c.d.s., red framed "P.P.", "Paid" transit c.d.s. and "4" reales due marking on arrival, endorsed "Via Southampton y Panama" at base, this location in the front making the postal clerk to misinterpret the country of destination as Panama, as confirmed by "Missent to Panama" annotation on reverse, with Paris transit adjacent, a very fine and rare postal-history usage. (Image)

Est. $250-300

1855-71 three stampless external covers carried from Panama or via Panama, including one to France dispatched at the British P.O. in Panama, the other two with double-arc datestamps of the British P.O.'s of Valparaiso and Guayaquil, sent to Paris and New York, with "Panama/Transit" and three-line "Panama/Transit" datestamp, a very fine trio.

Est. $150-200

Stampless envelope to Hamburg, showing small "A/Panama/Au 14-73" c.d.s. of the British P.O., carried via New York and London, with Anglo-French "G.B./3F.60c." accountancy marking, "1/-" shilling and "14½" groschen manuscript rates, the latter upon arrival, London and Hamburg c.d.s.'s on back, pin hole at left and few slight tone spots, very scarce. (Image)

Est. $200-300

Via Panama, three stampless covers, including two 1876 envelopes from Guayaquil to France, carried at single and double rate, struck with double-arc datestamp at the British P.O. on dispatch, with three-line datestamp "Panama/Transit", the third being a folded letter from London to Trujillo, Peru, with British Panama double-arc datestamp, rated at 4 shillings and charged with 2 dineros upon arrival. (Image)

Est. $200-300

British Post Office in Panama, #Z96, 1874-80 6d grey, plate14, tied to envelope to Valparaíso, Chile, by barred "C35" oval cancel, with corresponding "A/Panama/Mr 31 75" c.d.s., taxed on arrival with red "Valparaiso/10c./Multada" handstamp, matching c.d.s. on reverse, very fine and scarce usage. (Image)

Est. $300-400