12c Black (36).
Horizontal pair, tied by light strike of blue "Charlotteville Va. Jul."
circular datestamp on 1858 cover to London, England and forwarded to
Paris, France, forwarding postage paid by two Great Britain 4p Rose
(26), tied by "11" in barred oval grid, "Boston Br. Pkt. Jul. 28",
London and receiving backstamps, red "19" credit, neat "PD" in oval
handstamp, fresh and Very Fine, a beautiful mixed-franking cover, ex
Kapiloff (Image) 
12c Black (36). Four
singles, one has s.e. at top, tied by grids on small 1859 cover to
Ladybank, England and forwarded within England, forwarding postage paid
by two Great Britain 1p Red (20), tied by "466" in barred oval
handstamps, red "N. York Br. Pkt. 18 May 17" credit datestamp, Liverpool
transits, Ladybank backstamp, minor edge wear, Very Fine and choice
double-rate redirected usage, ex H. J. Baker, with 1980 Friedl certificate
(Image) 
12c Black (36).
Horizontal pair, intense shade and impression, tied by boldly struck grids,
red "Phila. Am. Pkt. 3 Jun. ?" credit datestamp on cover to Liverpool,
England and forwarded to London, forwarding postage paid by Great
Britain 1p Red (20) and tied by "466" in barred oval, matching
"Liverpool JU 22, 1860" circular datestamp, Liverpool U.S. Packet
datestamp, receiving backstamp, missing top flap and slightly reduced at
top and left, otherwise Very Fine and attractive mixed franking (Image) 
12c Black (36).
Horizontal pair, incredibly intense shade and impression, tied by
well-struck large "Paid" grid on 1859 folded cover to Manchester,
England, red "19" credit, neat "Boston Br. Pkt. 6 Apr." struck in black
in error, Liverpool transit, receiving backstamp, some faint cover toning,
otherwise Extremely Fine and choice (Image) 
12c Black (36).
Horizontal pair, tied by neat "Newport R.I. Oct. 4, 1859" circular
datestamp on cover to Liverpool, England, red "Paid 24" in circle
and "3" credit handstamp, London transit and receiving backstamp, fresh and
Very Fine, with 1987 P.F. certificate, ex Haas
(Image) 
12c Black (36).
Horizontal pair and two singles, each cancelled by neat strike of
"Supplementary Mail" Type A handstamp and red "19" credit on light
yellow 1860 cover to London, England, receiving backstamp, some edge
tears, still Very Fine, scarce use of the Supplementary Mail handstamp to
cancel stamps, ex Baker (Image) 
12c Black (36). Block of
four, scissors-separated and including significant part of two
adjoining stamps at bottom, tied by "Washington D.C. Feb. 14, 1860"
circular datestamps on folded cover to London, England, bold red
"38" credit at Bottom left corner, block originally folded over edge
causing creasing in left vertical pair, cover refolded to show block, Very
Fine appearance, blocks of the 12c 1857 are very rare on cover (Image) 
12c Black, Plate 3 (36b).
Used with 3c Dull Red (26), both stamps tied by bold strikes of
red New York "Supplementary Mail" Type A handstamp, third strike at
bottom of 1860 folded letter to Marseilles, France, red "New York
Paid 3 Jul. 28" credit datestamp, carried aboard the Vanderbilt Line's
Vanderbilt (American Packet), small boxed "PD", ultramarine Havre
transit, transit and receiving backstamps, stamps centered to one side,
slightly toned, horizontal file fold away from stamps, Very Fine, a
colorful and extremely rare New York Supplementary Mail cover carried by
the short-lived Vanderbilt Line, the premium for sending the cover via
Supplementary Mail was paid in cash (Image) 
12c Black, Plate 3 (36b).
Horizontal strip of seven, second and third stamps from left show double
framelines, remarkably choice centering, used with two singles of 3c
Dull Red (26) and tied by "Philadelphia Pa. Jul. 9" datestamps on buff
1860 cover to Paris, France, red "Philadelphia Pa. Paid Jul. 9 1860"
exchange office datestamp also ties strip, transit and receiving backstamp,
light vertical file fold barely affects strip (mostly between stamps), left
stamp perfs slightly affected from placement at edge of cover, few minor
flawsVERY FINE. THIS IS ONE OF THE LARGEST MULTIPLES OF THE 1859 12-CENT PLATE 3 RECORDED ON COVER. A WONDERFULLY RARE COVER PAYING SIX-TIMES THE 15-CENT RATE TO FRANCE.
Illustrated in Brookman on p. 248. Ex Grunin and Kapiloff (Image)