post master provisional sold in an auction selling rare stamps

Sell Your Rare Stamps with Sotheby's

Get a Stamps Auction Estimate

Get a Stamps Auction Estimate
Wonder how much your rare stamps might be worth and how to sell it? Simply follow the steps below and Sotheby's will recommend the best approach for selling your rare stamp collection.

Get an Estimate

Rare Stamps Sold at Sotheby's

Frequently Asked Questions

  • When is the best time to sell my unique and rare stamp collection?
    Rare stamps of the classic period issued during the mid- to late-19th century are in constant demand. Collectible stamps with curious printing errors can command significant premiums. For example, in 1918, a sheet of 100 recently-introduced 24-cent airmail stamps was discovered with the centre inverted; the “Inverted Jenny” now sells for hundreds of thousands of dollars. Although Sotheby’s focuses on high-value, single-owner collections, our team offers free saleroom estimates for more modest properties and can recommend reputable outlets for sales by auction or private treaty.
  • How is the value of my stamps determined?
    Sotheby's specialists have decades of experience in appraising and identifying old and rare stamps from around the world. Simply submit clear photographs of the front and back of your antique stamps and our specialists will carefully review the stamp or stamp collection and determine whether it is indeed collectible.

More information on how to sell with Sotheby's

Sotheby’s is your best resource to buy and sell an old stamp, uncanceled stamp, mint postage stamp, scarce stamp, unused block of stamps, sheet of postage stamps, stamp collection or rare stamp such as a British Guiana 1c Magenta, Treskilling Yellow, First Two Mauritius, Baden 9 Kreuzer, Inverted Jenny, Inverted Dendermonde, Hawaiian Missionaries, Red Mercury, Inverted Swan, Penny Black, Sicilian Error of Colour, Tiflis, Post Office Mauritius or Postmasters’ Provisionals. Also collectible are a plate block, imperforate pair, inverted image, essay, proof, specimen, used single, unused single, original gum, pane, cover, first day cover, bisect, and never hinged stamps.

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