2c Black (73).
Perfectly-centered vertical pair, tied by targets on unsealed cover to San
Francisco with red "Honolulu U.S. Postage Paid Jan. 22" (ca. 1864-65)
circular datestamp and "San Francisco Cal. Feb. 15" double-circle datestamp
(second lighter strike also ties pair), few nibbed perfs do not
detractEXTREMELY FINE. A REMARKABLE COVER PAYING THE 2-CENT SHIP FEE PLUS THE 2-CENT DROP LETTER RATE AT SAN FRANCISCO. THE HIGHLIGHT OF THE BURROWS COLLECTION.
After the 2c drop rate became effective on July 1, 1863, covers from Hawaii to San Francisco, the port of entry, could be prepaid 4c (2c ship fee plus 2c drop rate). Examples of this rate are extremely rare.
Ex Honolulu Advertiser (where it realized $16,500 hammer). With 1967 P.F. certificate (Image)
2c Black (73). Used on 3c
Pink entire (U58) from Hawaii to Racine, Wis., red "Honolulu U.S.
Postage Paid Dec. 10" circular datestamp, 2c tied by bold "San Francisco
Cal. Jan. 10" duplex double-circle datestamp and target, slightly reduced
at left and stamp affected by horizontal file fold, otherwise Very Fine,
scarce usage (Image) 
2c Black (73). Vertical
strip of three and vertical pair, strip with part imprint at right,
tied by targets, "Station G Philada. Jun. 22, 1867" circular datestamp on
cover with green illustrated Hedge Plants and Tree Seeds corner card to
Canada West, receiving backstamp, most of one backflap removed, still
Very Fine, scarce and colorful usage (Image) 
2c Black (73). Horizontal
pair, used with horizontal pair of 3c Rose (65) and tied by targets, "New
Orleans La. Feb. 23, 1866" double-circle datestamp on cover to Montreal,
Canada, receiving backstamp, Very Fine
(Image) 
2c Black, E. Grill (87).
Vertical pair and single, crisp impression, clear grills, tied by quartered
cork cancels on cover to Brockville, Canada West, light strike of
"Chicago Ill. Aug. 3" circular datestamp, few toned perfs from gum,
otherwise Very Fine, ex Allen, with 1984 P.F. certificate (Image) 
2c Black (73). Tied by
"Boston Mass. Paid" double-circle handstamp on March 8, 1866 folded printed
prices current to Newcastle, New Brunswick, blue crayon"1" exchange
marking, receiving backstamp, vertical file fold well clear of stamp, Very
Fine (Image) 
2c Black (73). Tied by
quartered cork, "Boston Mass. Apr. 28" circular datestamp on 1866 blue
folded printed prices current to Newcastle, New Brunswick, neat "1c"
due handstamp, receiving backstamp, vertical file fold away from stamp,
Very Fine (Image) 
2c Black (73). Tied by
cork cancel on unprinted part of circular to Halifax, Nova Scotia,
blue Oct. 26, 1867 New Orleans company handstamp, trivial edgewear, Very
Fine, scarce usage (Image) 
2c Black, F. Grill (93).
Tied by cork on Sept. 1870 printed prices current to Halifax, Nova
Scotia, bold "1" due handstamp, small filing hole at left, Very Fine (Image) 
2c Black (73). Horizontal
pair overlapping the left edge of pair of 3c Rose (65) on 1866 yellow cover
to Demerestville, Prince Edward Island, cancelled by pinwheel cork
cancel, 3c pair tied by matching "Montgomery Ill. May 14, 1866" rimless
datestamp, receiving backstamps, 2c pair top perfs blunted, short perfs on
left stamp, 3c pair small piece out at top of right stamp, otherwise Very
Fine, scarce Maritime Province destination
(Image) 
2c Black, 5c Brown (73,
76). Tied by blue "Wells, Fargo & Co. Victoria Nov. 13" oval
handstamps on 3c Pink entire with printed frank to San Francisco,
stamps affixed partly over blue oval "Post Office Victoria V.I."
handstamp, trivial edgewear, traces of previous owner's handstamp at
topVERY FINE. A BEAUTIFUL AND RARE WELLS FARGO & CO. EXPRESS COVER FROM VICTORIA, VANCOUVER ISLAND, TO SAN FRANCISCO.
Very few covers are known sent by this route are knwon with San Francisco as the final destination. (Image)