2c Black on Orange, Die 4,
entire (U56). Used to Barcelona, Spain, neat "Printed Circular"
and blue rating handstamp, receiving backstamp, some slight wear, Fine (Image) 
2c Black on Light Manila, Die
4, Wrapper (W57). Ty. 29, Class V, used to Germany, cancelled by
target, matching "East Seneca N.Y., Dec. 4, 18??" circular datestamp, few
light toned spots, still Very Fine (Image) 
2c Black on Light Manila, Die
4, Wrapper (W57). Used to Bordeaux, France, quartered cork ties
2c Brown (113), red "Etats-Unis O. Fr. H No. 2" octagonal French
packet datestamp, receiving backstampVERY FINE. AN EXTRAORDINARILY RARE COMBINATION OF THE 2-CENT BLACK JACK WRAPPER AND 1869 PICTORIAL ISSUE TO PAY THE 4-CENT PRINTED MATTER RATE TO FRANCE.
Black Jack envelopes and wrappers are rarely found used in combination with the 1869 Pictorial Issue, and the typical example is a 3c domestic rate. This 4c printed matter rate to France is exceedingly rare. (Image)
2c Black on Light Manila, Die
4, Wrapper (W57). Used with 2c Black, F. Grill (93), centered to
top left, on front only of wrapper to Switzerland, part of "PAID
ALL" handstamp at right, light file fold affects embossing, Fine, rare
Black Jack stamp and wrapper combination
(Image) 
Used Black Jack Postal
Stationery Balance. 30 entires or wrappers and three fronts only,
several interesting usages incl. No. U54 with 1c Bank Note with embossed
railroad design, one No. U50 with No. 63 from San Francisco to Sacramento
Cal., few advertising, one with red cancel, one with blue cancel, few
faults, mostly Fine-Very Fine (Image)