Barry Machine Cancel, "Philadelphia, Pa. Aug 31 189". Machine cancel missing "9" in 99 with "National Export Exposition" slogan ties 2¢ Bureau issue on U.S. Plate Glass Insurance Co. corner card cove to Gettysburg Pa., Very Fine and rare variety.
Bomar No. P99-04A; $400.

This missing "9" variety is known only from Aug. 25th to Sep. 1st 1899. Bomar $400
(Image)

Bomar $400

Milam & Holmes Machine Cancel, "Frankfort, Ky., Nov 21, 6 PM, 1897". Type 4 repeater ties 2¢ red (279B) on cover to Thompkinsville Ky., Nov. 22nd arrival backstamp; small edge flaws, Very Fine and scarce use as canceller instead of receiver.
Estimate; $200 - 300. Est. $200-300 (Image)

Est. $200-300

Sigwalt Mechanical, "Chicago Ill * 7 30 PM * Jul 27 1889". Mechanical handstamp with fancy "5" oval canceller on 2¢ green entire to Kalamazoo Mich., Carrier (7.28) arrival backstamp, Very Fine and rare.
Estimate; $200 - 300.

This is a very scarce mechanical postmark device, probably Sigwalt described in Leonard Piszkiewicz's Chicago book on pages 62-63. Est. $200-300 (Image)

Est. $200-300

Unknown Manufacturer, "Washington, D.C., Nov 29, 1892". Hanmer Type 10, cancels 1¢ light blue entire to local address, Very Fine.
Estimate; $100 - 150.

This marking has at various times been attributed to the American and International machines of the era, but no solid evidence definitively links it to either. Est. $100-150 (Image)

Est. $100-150

Whitehead Machine Cancel, "Brooklyn, N.Y., Mar 23, 1900". Type 3R received marking on reverse of cover from Rochester N.Y. to Flatbush, Brooklyn, Very Fine, This receiver was a machine developed by Alfred Whitehead, a resident of Brooklyn.
Estimate; $100 - 150. Est. $100-150 (Image)

Est. $100-150