cover 1858 (May) entire letter to Palma bearing Cuba/Puerto Rico ½r. greenish blue (small margins) tied by dumb oval of stars, blue despatch c.d.s. alongside, showing a fair strike of British P.O. Crowned circle "PAID/AT/SAN JUAN PORTO RICO" h.s. in black, rated "2/2" and with circular framed "PP" alongside, numerous transit c.d.s.