1846-66, Collection of stampless mail incl. the earliest known example of the British Postal Agency double arc ds (AP 20 1846, according to Parmenter & Gordon) alongside forwarding agent cachet of Frederick W. Byrne; cover with JY 23 1846 double arc ds, ; 1849 cover from Chile with "COPIAPO / FRANC" hs (unrecorded in Tizon), "PANAMA 26 NO 1849 / TRANSIT" ds and PANAMA / TRANSIT" hs; 1851 cover from Valparaiso with "PANAMA / TRANSIT" hs, 1853 cover from Callao with "VAPOR / LIMA / 1853" and "PANAMA / TRANSIT" hs; 1861 cover from Chile to USA with "PAID - TO / PANAMA" hs; 1862 "Cobija correspondence" cover with "VIA PANAMA" hs, 1862 cover from Guayaquil with crisp "PAID - TO / PANAMA" and cover from Islay with Panama Transit 3-line ds, fine to very fine group (9) (Image)