ROYAL MAIL STEAM PACKET COMPANY: 1875, House flag 10 cents rose-red, tied by oval agents cachet "JOH. KOCK & CO LLOYD'S AGENTS PTO CABELLO" to folded lettersheet (sideflaps missing) endorsed "p. Essequibo" (the Vessel of the Royal Mail Steam Packet Company) to Barcelona with instructional marking "VIA DE INGLATERRA" on reverse and red "SHIP-LETTER" and tax marks on front. One of only three recorded letters with the Royal Mail Steam Packet Company stamp this being the only recorded usage from Venezuela and the only usage to an address outside of the Caribbean area, a great and attractive rarity of Venezuela and Private Ship letter stamps of the World, detailed certificate Heister BPP (2005) (Facit RMS 1)
