San Juan, "Paid/At/San Juan Porto Rico" crowned circle, fine strike applied in red at upper right of November 20, 1847 folded letter written at Mayaguez and addressed to St. Pierre, Martinique, backstamped at San Juan and St. Thomas with double-arc datestamps in black, receiving the St, Pierre c.d.s. on arrival on front, very fine, a scarce destination; S.G. CC1, £650. (Image)

Est. $300-400

Aguadilla; Great Britain S.G. #Z11, Z12, Z13 1867-73 1s Green, Pl. 7, 9 and 12, 2s Blue, four examples of the lower denomination, one being defective, all with good strikes of the "F84" barred oval, and one 2s with a fair strike of the same cancellation, fine to very fine group; S.G. £710. (Image)

Est. $200-300

Arroyo; Great Britain S.G. #Z15, Z16, Z29, 1864-77 1d Rose-red pl. 174, ½d Lake-red and 1s Green pl. 12, tied to large piece of cover to France by Arroyo "F83" obliterator, the 1s additionally cancelled by London c.d.s. in red, showing nearly complete "Arroyo/Mr 13 77/Porto-Rico" c.d.s., and part French entry c.d.s., both in black at base, Marseilles c.d.s. on back, very fine, a rare combination franking, complete covers from Arroyo are exceedingly rare. (Image)

Est. $200-300

Mayagüez; Great Britain S.G. #Z32, Z34, Z45, Z50, 1870-80½d Rose-red,1½d Lake-red and 6d Grey pl. 14, three used together on small piece of cover sent to Glasgow, tied by superb "F85" barred oval, with arrival c.d.s. at left, and 1s Green pl. 11 with a watery strike and one corner perforation with minor crease, fine to superb.

Est. $100-150

Naguabo, Great Britain S.G. #Z55, 3d Rose, a marginal pair of remarkable freshness, slightly centered to lower right, attractively cancelled by a bold strike of the rare "582" barred oval, very fine and rare multiple; S.G. £2,200+. (Image)

Est. $500-750

Naguabo, Great Britain S.G. #Z57, 1876 4d vermilion, two examples, one being outstandingly fine due to its freshness, vivid shade, very good centering and the quite neat "582" barred-oval cancellation, the other, slightly toned and with one perforation missing and repaired in lower left corner, possess a faint strike of the "582"; S.G. £3,000. (Image)

Est. $750-1,000

Naguabo, Great Britain S.G. #Z61, 1873-77 1s Green pl. 12, wing-margin example, crisp impression and good centering showing the design complete, cleanly cancelled by "582" barred oval, very fine: 1963 B.P.A. certificate; S.G. £1,100. (Image)

Est. $300-400

San Juan, Great Britain S.G. #Z84, Z102, Z104, 1d Rose-red, 10d Red-brown, 1s Green pl. 4, cleanly tied by "C61" barred oval cancels to December 27, 1868 folded letter to Cádiz, Spain, "Porto-Rico/Paid' and "P.D." oval handstamp in red, London transit c.d.s., and manuscript charge on delivery of "4" reales, horizontal crease to cover and 10d slightly cut into at right when trimmed by scissors, still though an attractive and very rare three-colour franking. (Image)

Est. $400-500

San Juan, Great Britain S.G. #Z85, Z105, 1870-77 1½d Lake-red, 1s Green pl. 12, both tied to April 26, 1877 folded letter to Genoa by "C61" barred oval handstamp and red London c.d.s., showing "Porto-Rico" c.d.s. adjacent, backstamped on receipt, an unusual franking; in addition 1d Rose-red, 1s Green pl. 10 and 10s Red-brown, the three single examples used with the "C61" obliterator, of which two with slight thin. (Image)

Est. $400-500