Stampless cover with fine strike of GUAYAQUIL British P.O. cds on reverse dated AP 14 1861. Sent via the British P.O. in PANAMA with two line 'PAID TO PANAMA' marking in red and fine strike of PANAMA British P.O. cds on front. Addressed to USA with large circular 'STEAMSHIP 10' marking in black also on front. A nice item sent via two British P.O.s in Latin America.