Cover franked with pair 1866 10c scarlet vermilion 'Quetzal' issue on front tied by fine octagonal RODEO cds dated ABR 16 1902 and 1900 1c deep green and pair 2c rose carmine on reverse tied by partial strikes of the same cds (SG 48, 101 & 102). Sent registered with unframed 'R. No. 215' marking of RODEO and re-registered in transit with fine strike of OFICINA POSTAL DE SAN MARCOS cds dated 17 ABR 1902 with manuscript '852' registration number alongside all on front. Addressed to GERMANY with transit and arrival marks on front & reverse. A scarce origination for registered mail.