BRITISH P.O.s IN CALLAO, MONTEVIDEO & VALPARAISO - 1870s UNP...

BRITISH P.O.s IN CALLAO, MONTEVIDEO & VALPARAISO - 1870s UNPAID MAIL TO FRANCE/G.B.; 29 Aug. 1872 EL to France "Por Steamer Cuzco" (PSNC vessel) with small British PO "MONTEVIDEO" (Uruguay) cds on the flap, 145 Oct. 1873 env. ex Lima (firm's cachet) to France with fine small British PO "CALLAO" cds backstamp and a fine hexagon-framed "GB/1F90c" on the front, and attractive 3 Dec. 1877 E to Liverpool "Via Panama" (by PSNC SS 'Eten') with mainly fine "VALPARAISO/UNPAID" cds on reverse and a superb Liverpool "s1/6d" in circle charge-mark. Good trio. [The last illust. in PSNC, p.140.] (3 covers)Cross Reference: CHILE, G.B. USED ABROAD STAMPS & COVERS, ACCOUNTANCY MARKS, URUGUAY