M-bag surface mail travels the same way that regular surface mail does and is in the same class of service, so it is important to alert your customers that you are shipping this way so that they have realistic expectations.
M-bag air mail travels as first class mail. If you are using the M-bag air mail service be sure to tell the post office to put your package in the green air mail bag and to label/stamp it "air mail" generously. On more than one occasion, we have paid for air mail service, but because M-bags are always shipped in brown boxes, or boxes covered with brown paper, they are sometimes mistaken for surface mail.
There are two main disadvantages to M-bag service: it is not trackable, and it is not insurable by the post office. You can, however, purchase a "Certificate of Mailing" from the post office, which proves that you put the parcel in the mail, at a nominal cost. To insure M-bag parcels, use a blanket or one-time-only insurance policy from a carrier such as u-pic (www.u-pic.com) which covers all shipping nicely. If you are trying to send a package to a country that u-pic doesn't cover, you may wish to reconsider filling the order. They do not cover countries that have less than an 85% completion rate, or obvious global hot spots.
As soon as a parcel weighs over 4 lbs. we always consider sending it by M-bag. To compute the amount of postage for an M-bag parcel, do the following:
Go to www.usps.com
Select Calculate Postage
Select Calculate International Postage
Select Calculate Volume Discount Mail
Select International Volume Discount Mail
Select the country from the pull-down list (continue)
Select Economy M-bags (Books and Publisher's Periodicals) - do not select "Economy M-bags" as these non-book rates are higher, or Airmail M-bags if you are sending the books air mail (continue)
The Pieces field is a multiplier; if you are sending only one package in the bag, leave it at "1"
Type in the weight of the parcel to the nearest pound
Bonhams, Dec. 8-18: Autograph Letter Signed ("Martinus Luther") to His Friend the Theologian Gerhard Wiskamp ("Gerardo Xantho Lampadario"). $100,000 - $150,000.
Bonhams, Dec. 8-18: An Exceptionally Fine Copy of Austenís Emma: A Novel in Three Volumes. $40,000 - $60,000.
Bonhams, Dec. 8-18: Presentation Copy of Ernest Hemmingwayís A Farewell to Arms for Edward Titus of the Black Mankin Press. $30,000 - $50,000.
Bonhams, Dec. 8-18: Autograph Manuscript Signed Integrally for "The Songs of Pooh," by Alan Alexander. $30,000 - $50,000.
Bonhams, Dec. 8-18: Autograph Manuscript of "Three Fragments from Gˆtterd‰mmerung" by Richard Wagner. $30,000 - $50,000.
Bonhams, Dec. 8-18: Original Preliminary Artwork, for the First Edition of Snow Crash. $20,000 - $30,000.
Bonhams, Dec. 8-18: Autograph Letter Signed ("T.R. Malthus") to Economist Nassau Senior on Wealth, Labor and Adam Smith. $20,000 - $30,000.
Bonhams, Dec. 8-18: History of the Peloponnesian War by Thucydides Finely Bound by Michael Wilcox. $20,000 - $30,000.
Bonhams, Dec. 8-18: First Edition of Lewis and Clark: Travels to the Source of the Missouri River and Across the American Continent to the Pacific Ocean. $8,000 - $12,000.
Bonhams, Dec. 8-18: Original Artwork for the First Edition of Neal Stephenson's Groundbreaking Novel Snow Crash. $100,000 - $150,000.
Bonhams, Dec. 8-18: A Complete Set Signed Deluxe Editions of King's The Dark Tower Series by Stephen King. $8,000 - $12,000.
Bonhams, Dec. 8-18: Autograph Letter Signed ("John Adams") to James Le Ray de Chaumont During the Crucial Years of the Revolutionary War. $8,000 - $12,000.
Sotheby’s Book Week December 9-17, 2025
Sotheby’s, Dec. 17: Francesco Colonna. Hypnerotomachie, Paris, 1546, Parisian calf by Wotton Binder C for Marcus Fugger. €200,000 to €300,000.
Sotheby’s, Dec. 17: Nausea. De principiis dialectices Gorgias, and other works, Venice, 1523, morocco gilt for Cardinal Campeggio. €3,000 to €4,000.
Sotheby’s, Dec. 17: Billon. Le fort inexpugnable de l'honneur, Paris, 1555, Parisian calf gilt for Peter Ernst, Graf von Mansfeld. €120,000 to €180,000.
Sotheby’s Book Week December 9-17, 2025
Sotheby’s, Dec. 16: Salinger, J.D. The Graham Family archive, including autographed letters, an inscribed Catcher, a rare studio photograph of the author, and more. $120,000 to $180,000.
Sotheby’s, Dec. 16: [Austen, Jane]. A handsome first edition of Sense and Sensibility, the author's first novel. $60,000 to $80,000.
Sotheby’s, Dec. 16: Massachusetts General Court. A powerful precursor to the Declaration of Independence: "every Act of Government … without the Consent of the People, is … Tyranny." $40,000 to $60,000.
Heritage Auctions Rare Books Signature Auction December 15, 2025
Heritage, Dec. 15: John Donne. Poems, By J. D. With Elegies on the Author's Death. London: M[iles]. F[lesher]. for John Marriot, 1633.
Heritage, Dec. 15: Edgar Rice Burroughs. Tarzan of the Apes.
Heritage, Dec. 15: F. Scott Fitzgerald. Tender is the Night. A Romance.
Heritage, Dec. 15: Jerry Thomas. How to Mix Drinks, or the Bon-Vivant's Companion, Containing Clear and Reliable Directions for Mixing All the Beverages Used in the United States…
![<b>Sotheby’s, Dec. 16:</b> [Austen, Jane]. A handsome first edition of <i>Sense and Sensibility,</i> the author's first novel. $60,000 to $80,000.](https://ae-files.s3.amazonaws.com/AdvertisementPhotos/9a74d9ff-42dd-46a1-8bb2-b636c4cec796.png "<b>Sotheby’s, Dec. 16:</b> [Austen, Jane]. A handsome first edition of <i>Sense and Sensibility,</i> the author's first novel. $60,000 to $80,000.")
![<b>Heritage, Dec. 15:</b> John Donne. <i>Poems, By J. D. With Elegies on the Author's Death.</i> London: M[iles]. F[lesher]. for John Marriot, 1633.](https://ae-files.s3.amazonaws.com/AdvertisementPhotos/8caddaea-4c1f-47a7-9455-62f53af36e3f.jpg "<b>Heritage, Dec. 15:</b> John Donne. <i>Poems, By J. D. With Elegies on the Author's Death.</i> London: M[iles]. F[lesher]. for John Marriot, 1633.")
