cover 1850 (23 Jan.) E.L. to Cadiz, showing red Crowned circle "PAID/AT/SAN JUAN PORTO RICO" overstruck by London Paid and Calais entry transit c.d.s., oval-framed "PF" and unframed "13R" in red with, on reverse, "SAN JUAN PORTO RICO" double-arc d.s. and Cadiz arrival c.d.s.; the E.L. with violet indelible crayon date at foot. Photo