Cumming's Express Post.
Red oval handstamp on attractive Valentine cover with embossed
border and floral design, to local street address, Very Fine, a lovely
example of this rare marking, Hahn note dates this to 1846, ex Golden (Image) 
Cumming's Express, 2 Cts.
Red oval handstamp with locomotive, much better strike than usual on Dec.
8, 1846 folded letter to local street address, small tear at top, Very
Fine, only a few examples of this illustrated local-post marking are known,
ex Hollowbush (Image) 
Cummings' City Post, New York
N.Y. Halves of two different covers, one with red "Cummings City Post"
Eagle and Stars framed handstamp, other with red "Cummings Express Post"
oval, although these are only pieces the strikes are Very Fine and rare (Image) 
Cutting's Despatch Post.
Blue oval handstamp perfectly struck on folded Feb. 20, 1847 Washington's
Birthday celebration notice to Col. A. Clemonds and officers under his
command,Extremely Fine, this is the earliest recorded example of Cutting's
Despatch Post, five examples reported, for background information go to: http://www.
siegelauctions.com/1999/817/yf817162.htm#174, ex Lounsberry (Image) 
Davis' One Cent Despatch.
Red circular handstamp boldly struck on back of embossed Valentine cover to
local street address, minor toning, with Valentine enclosure that appears
to belong (but cannot be guaranteed), Very Fine strike of this rare
marking, ex Kelly (who recorded this as the only stampless Davis cover he
had seen) and Golden (Image)
Davis's Penny Post, Baltimore
Md., (1c) Black on Lilac (57L1). Type D (Position 4), right sheet
margin, large at top, just touching corner ornaments at left, cancelled by
red "Davis' One Cent Dispatch" circular handstampVERY FINE. ONE OF FOURTEEN RECORDED EXAMPLES OF THIS RARITY -- ONLY SIX ARE CANCELLED BY THE RED COMPANY HANDSTAMP.
Ex Hall. With 2001 P.F. certificate (Image)
DeGroot's Express.
Lightly-inked red oval handstamp struck twice on small enamel cover to
local street address with original Valentine enclosure, hand-written
poem matches address, minor soiling and edgewear, Fine, this is the only
recorded example of DeGroot's Express
(Image) 
Dupuy & Schenck, New York
N.Y., (1c) Black on Gray (60L2). Ample margins to barely in along outer
frameline at upper left, tied by ms. check mark, red "Dupuy & Schenck/Penny
Post" two-line handstamp on blue folded cover to Howland & Aspinwall in New
York City, pencil "54 South" street address, fresh and Very Fine, a
magnificent example of this distinctive local-post issue depicting a bee
hive, the symbol of productivity, although there is no indication of
origin, given the nature of Howland & Aspinwall's business, it is likely
that this letter was brought to New York from another city outside the
regular mails and given to Dupuy & Schenck for delivery, ex Schwartz (Image) 
Dupuy & Schenck/Penny
Post. Red two-line handstamp on Feb. 11, 1847 folded letter to local
street address, lightly toned file fold, letter is an invitation to a
meeting to raise money for Irish Famine victims, Fine, scarce (Image) 
City Despatch Post, 2
Cents. Red oval handstamp -- formerly Franklin City Despatch Post with
name removed -- clearly struck on Sep. 20, 1847 folded letter to local
street address, pen and pencil date notations, Very Fine, a well-researched
article by Eric Karell (The Penny Post, July 2005), identifying the
three recorded examples of Dupuy & Schenck stamps used with the altered
"City Despatch Post" oval and correlating the dates (9/8, 9/17 and 9/25 in
1847) with other evidence that Dupuy & Schenck sold out to Bouton during
the first week of September 1847, ex Caspary and Middendorf (Image) 
Dupuy & Schenck, New York
N.Y., (1c) Black on Gray (60L2). Large margins to just touching outer
framelines, red "Paid" cancel, reaffixed on Sep. 9, 1847 blue folded cover
to 1 Hanover St., second strike of "Paid" and matching red "City
Despatch Post, 2 Cents" oval handstamp -- formerly Franklin City
Despatch Post with name removed -- neatly docketed on back, some skillful
cosmetic improvements (accompanying certificate shows the cover before
refolding)FINE APPEARANCE. AN EXTREMELY RARE USE OF DUPUY & SCHENCK STAMP AFTER THE POST WAS BOUGHT BY BOUTON IN SEPTEMBER 1847.
Accompanied by a well-researched article by Eric Karell (The Penny Post, July 2005), identifying the three recorded examples of Dupuy & Schenck stamps used with the altered "City Despatch Post" oval and correlating the dates (9/8, 9/17 and 9/25 in 1847) with other evidence that Dupuy & Schenck sold out to Bouton during the first week of September 1847.
Ex "German" Sale and Hall. With 2001 P.F. certificate. (Image)