Lot
672 
Leavitt Machine, "Baltimore, Md. Dec 5, 81", Type X1A, bold strike ties 1¢ blue (182) on unsealed Brown Chemical Co. adverting cover with address label at the third-class rate to Rochester N.H.; 1¢ some toned perfs, cover stain at left, an Extremely Fine strike of this rare experimental Leavitt machine. Estimate $500 - 750.
The downward tilt of the canceller suggest that that the Baltimore machine was later used in Boston (see the X1B Boston use).
Realized: $350
Lot
673
Leavitt Machine, "Boston, Mass.", Type X-D with inverted "C" killer on unsealed 1¢ blue entire to Milton Mills N.H., original printed "Poole & Plummer, Wooden Ware, Boston, Mass." enclosure, Very Fine and choice (Rarity K). Estimate $500 - 750.
Lot
674
Leavitt Machine, "Boston, Mass., Oct 31", type X3-2B, sharp impression ties 3¢ green (207) on cover to Pembroke Mass.; reduced slightly at left, Very Fine, Only 2 or 3 First-Class Uses Recorded. Estimate $200 - 300.
Lot
675
Leavitt Machine, "Boston Mass., Sep 1, 1 PM", Type X3A, Die A, canceling unsealed 1¢ blue entire to Detroit, Michigan, blue lumber merchant corner card, original printed lumber market prices enclosure, two machine pins show, Very Fine and earliest known usage of this scarce machine postmark (by three hours), one other example is known from same correspondence. Estimate $300 - 400.
Realized: $210
Lot
676
Leavitt Machine, "Boston Mass., Sep 4, 4 PM", Type X3A, Die A, choice strike canceling 1¢ blue entire to Hallowell, Me., pencil 1882 docketing at left, two machine pins show, Extremely Fine and choice, Latest Recorded use with Date Slug. Estimate $200 - 300.
Lot
677
Leavitt Machine, "Boston, Mass. Nov. 15" Prototype Cancel, clear strike cancels 1¢ postal card (UX5) to East Pepperell Mass., preprinted ad message for Bigelow Portable Engine and Boiler, Very Fine and choice. Estimate $3,000 - 4,000.
ONE OF TWO RECORDED TESTS OF THE LEAVITT PROTOTYPE MACHINE CANCEL.
Leavitt tested a prototype device on November 15, 1875, seven weeks before the first regular machine was placed in service. The cancel was composed of dashed lines and only one cork killer was used. Two examples are known, the post card offered here and a cover.
Realized: $2,600
Lot
678
Leavitt Machine, "Boston, Mass. Jan. 6.76", Type A-1 canceller, 14 oblique bars with two cork cancels, clear strike ties 3¢ green (158) on cover to sailor on U.S. Coast Survey Schooner "G.M. Bache"; reduced at left, Very Fine. Estimate $750 - 1,000.
THE FIRST DAY OF USE FOR THE LEAVITT TYPE A-1 MACHINE CANCEL.
Lot
679
Leavitt Machine, "Boston, Mass. Jan. 6.76", Type A-1 canceller, 14 oblique bars with two cork cancels 1¢ postal card (UX5) to Ludlow Vt., despite the partial strike of the day, the message side is datelined "Jan. 6th 1876", Very Fine, The first day of use for the Leavitt Type A-1 Machine cancel.. Estimate $500 - 750.
There are only a handful of the Leavitt Type A-1 Machine cancel used on postal cards. The two-cork design of the killer was specifically intended to cancel covers with two stamps.
Realized: $450
Lot
680
Leavitt Machine, "Boston, Mass., Feb. 2 .76", Type A1-2 test strike without killer cancels 1¢ postal card (UX5) to Portland Me., Very Fine and choice. Estimate $750 - 1,000.
ONE OF ONLY TWO RECORDED TEST STRIKES WITHOUT KILLER.
A second type of machine, with a mechanical feed but able to cancel only postal cards, was used from early February 1876 to the middle of April 1878. Despite its limited application, the machine met substantial need, since the availability of postal cards in sheets increased their commercial use. A test of the machine was made on February 2, 1876 without the killer as it had not been received at the time of the test.
Lot
681
Leavitt Machine, "Boston, Mass. Mar. 6.76", machine cancel ties 2¢ vermilion (178) on buff local cover to West Roxbury Mass., Very Fine, only three recorded 2¢ local uses. Estimate $300 - 400.
Realized: $280