Auction Series 257-264 in Zurich Day 4

La Guayra 1866: Rasco printing ½ r. rose, Stone II, zig-zag roulette 9½, 'O' for 'Q' reading PAOUETE, tied to February 1866 entire letter from Puerto Cabello to Bordeaux by CORREOS / LA GUAIRA undated circular handstamp in black, thence by closed bag to St. Thomas. London transit on reverse (March 2) in red and struck there with 'GB / 1F 60c.' Accountancy marking in black, thence via Calais (March 3) and Paris to destination where charged '10' décimes to pay upon receipt. An exceedingly rare stamp on letter, this example pre-dates the Stanley Gibbons listing by some six months. Cert. Holcombe (1989).
Catalogue 261: Stamp Issuing Steamship Companies