2c Brown, 12c Green (113,
117). Vertical pairs of each, one 12c has trivial corner crease, tied
by neatly-struck circle of V's fancy cancel on blue folded cover to
Cadiz, Spain, sender's blue oval datestamp indicates New York City
origin on May 10, 1870, blurry red transit on back, red "24" credit
handstamp, red crayon "4", red London Paid transit and "PD" in oval, Cadiz
receiving datestamp ties 2c pair, sender's ship designation
"Manhattan", minor edge wrinklesVERY FINE. A UNIQUE 1869 PICTORIAL FRANKING FOR THE 28-CENT BRITISH MAIL RATE TO SPAIN VIA FRANCE. ONE OF THE MOST DISTINCTIVE COVERS FROM THE FAMOUS GOMEZ CORRESPONDENCE.
Due to the -1/4 ounce (7.5 grams) weight increments for British-French mails, the rate to Spain for British mail via France increased to 28c for a letter weighing between -1/4 and -1/2 ounce. Only four 12c 1869 covers to Spain are recorded in the 1869 PRA census, and this is the only franking with pairs of the 12c and 2c among the four.
Illustrated in the Rose book (p. 32). Ex Ishikawa. (Image)
12c Green (117). Wide
s.e. at right, used with 1c Buff and 6c Ultramarine (112, 115), tied
by blue cork cancels, matching "Emmittsburgh Md. Jun. 24" circular
datestamp on blue cover to Rome, Italy, red "4" credit and "New York
Paid All Br. Transit Jun. 25" backstamp, red Verviers-Cologne transit,
purple "P.D." handstamp, blue crayon accounting mark, stains, nicks and
tears in cover, 6c scuffed, 12c torn, still an extraordinarily colorful and
rare franking for the 19c rate (Image) 
12c Green (117). Deep
shade, tied by quartered cork cancel, "Frankfort Ky. Feb. 22" circular
datestamp on 3c Pink entire to Montreux, Switzerland, red New York
transit, Very Fine, extremely fresh and choice, scarce combination of 12c
1869 and postal stationery (Image)
12c Green (117). Vertical
strip of three, used with 3c Ultramarine (114) on front only -- with
mourning border -- to South Australia, paying the old 39c rate via
Marseilles, reduced to 30c in Jan. 1868 and then to 24c one year later,
stamps tied by indistinct Va. datestamp and each 12c cancelled by red
"20" credit, Adelaide receiving datestamp (May 1870), 3c with s.e., one
12c has small margin tear, still a very desirable usage, scarce and Fine (Image) 
12c Green (117).
Horizontal strip of three, rich color, brownish gum around perf tips,
cancelled by quartered cork, "Phillipsburgh Pa. Jun. 18" circular datestamp
on 1870 cover to J. F. Bingham aboard U.S. Flagship Delaware in care
of American Consul at Singapore, sender's routing "Via
Marseilles", red "New York Paid All Br. Transit Jun. 21" backstamp,
matching "32" credit handstamp, red London Paid transit and "1d" colonial
rate handstamp, Singapore receiving backstampVERY FINE. AN EXTREMELY RARE 1869 FRANKING FOR THE SHORT-LIVED 36-CENT BRITISH MAIL RATE TO SINGAPORE VIA MARSEILLES. ONE OTHER SIMILAR COVER IN KNOWN TO US.
The 36c British Mail via Marseilles rate to Singapore was effective only from January thru November 1870. This cover and another similar cover from the Bingham correspondence (ex Ishikawa) are not listed in the 1869 PRA census. (Image)