About Unused 20th Century US Stamps

The 20th century saw the introduction of new printing techniques and color processes, and the mass distribution of U.S. postage stamps. Stamps with a huge variety of subjects (including commemoratives) and formats were issued by the U.S. Postal Service, and there are collectors for most of them. As with all other stamps, rarity and condition determine value.


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Interviews & Articles

An Interview With U.S. Stamp Collector Bob Allen

Like many collectors, I collected when I was a child, and then I became interested again in the ‘90s. I think eBay … [more]

An Interview With Postal History Collector Richard Frajola

I have a stamp collection, but I don’t consider myself a collector. I have a collection of my initials on stamps fr… [more]

An Interview with Stamp Collector John Hotchner on Philatelic Errors, Freaks and Oddities

My father was a stamp collector, and I just took to it. He was perfectly happy to mentor me, so I began collecting … [more]

An Interview with Smithsonian National Postal Museum Curator and Zeppelin Stamps Expert Cheryl Ganz

I’ve been a lifelong collector, even as a kid. There are just certain people for whom collecting seems to be part o… [more]



Best of the Web (“Hall of Fame”)

1847USA

1847USA

Bob Allen's beautiful and well organized catalog of US stamps from 1847 to 1970 is a fantastic resource for all US … [read review or visit site]

PhilaMercury

PhilaMercury

Richard Frajola's incredibly rich database of over 11,000 U.S. and foreign 19th Century postal stamp covers. This s… [read review or visit site]

Post Office in Paradise

Post Office in Paradise

Post Office in Paradise showcases Hawaiian postal history from the years before Hawaii became a part of the United … [read review or visit site]

Alphabetilately

Alphabetilately

This creative website is essentially a giant glossary of stamp collecting, 'from advertising covers through Zeppeli… [read review or visit site]

The Stamp Collecting Round-up

The Stamp Collecting Round-up

Don Schilling's long-running, in-depth blog on stamp collecting and postal operations. Schilling stays up on all th… [read review or visit site]

National Postal Museum

National Postal Museum

If you're into postal history or collectibles, check out the Smithsonian's National Postal Museum. This extensive s… [read review or visit site]

Private Die Proprietary Stamps

Private Die Proprietary Stamps

Bob Hohertz's impressive database of U.S. Private Die Proprietary stamps from the Civil War and Spanish American Wa… [read review or visit site]

R. A. Siegel Auction Galleries

R. A. Siegel Auction Galleries

This auction house site offers an extensive online database of US stamp information. Includes PDF catalogs of past … [read review or visit site]


Got a site to suggest? Let us know.




Clubs & Associations: US Stamps


Other Great Reference Sites: US Stamps

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Top eBay Auctions  Help | Get weekly 20th Century Unused US Stamps email

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Dr. Bob Us Scott #k15 Mnh Og Xf-s Gem With Certificate$310.01 Ends Wednesday 18 bids 8 watchers
Lot Unused Us Postage Stamps 15 & Up Face Value 300.00$204.02 Ends Tuesday 3 bids 10 watchers
Mint Nh Us Kans Nebr Stamp 666 667 668 677 678 679$198.00 Ends Wednesday 7 bids 7 watchers
Fabulous Mint Us Stamp Collection Must See$177.50 Ends in 4 hours 16 bids 15 watchers
Us~mint Postage Stamps~fv $179.66~28 Sheets~unused~lt34$161.69 Ends Tuesday 1 bid 3 watchers
Mint Us Stamp Plate Block Collection !$153.51 Ends Thursday 6 bids 9 watchers
Most Mint Antique Us Stamp Collection !$147.50 Ends Saturday 4 bids 9 watchers
Mint Us Stamp Collection Must See$146.50 Ends Friday 8 bids 11 watchers
Mint Us White Plain Stamp Souvenir Sheet 630$118.50 Ends Friday 7 bids 15 watchers
Us~mint Postage Stamps~fv $125~9 Unused Sheets~nr~lot25$112.50 Ends in 1 hour 1 bid 2 watchers
Us~mint Postage Stamps~fv $125~10 Sheets Unused~nr~lt29$112.50 Ends in 1 hour 1 bid 3 watchers
U.s. #461 Scarce Mint - 2c Pale Carmine, Perf 11$107.51 Ends Sunday 6 bids 5 watchers
Us Sc#398 Mnh 1913 2c Pse Xf-sup 95 Panama Canal $99.95 Ends Tuesday 1 bid 4 watchers
Mint Nh Us Stamp 300 301 302 303 304 305 306 307$86.00 Ends Saturday 5 bids 4 watchers
7 New Rolls Of 100 .33 Cent City Flag Stamps$82.99 Ends Tuesday 3 bids 8 watchers
Mint U.s. Recalled Legends Of The West Stamp Sheet Set $81.00 Ends Thursday 3 bids 8 watchers
2 Rolls Of .44 Cent Us Stamps$81.00 Ends in 1 hour 5 bids 5 watchers
200 Usps First Class Forever Postage Stamps$80.53 Ends Wednesday 7 bids 4 watchers
200 (10 Sheets) Of Unused 44 Cent Postage Stamps $79.78 Ends Saturday 3 bids 2 watchers
200 Usps First Class Forever Postage Stamps$79.52 Ends Wednesday 5 bids 3 watchers
200 Usps First Class Forever Postage Stamps$79.52 Ends Wednesday 4 bids 1 watcher
200 Usps First Class Forever Postage Stamps$79.00 Ends Wednesday 9 bids 5 watchers
200 Usps First Class Forever Postage Stamps$78.13 Ends Wednesday 5 bids 5 watchers
Mint Us Kans Nebr Stamp 665 666 667 668 676 677 678 679$78.02 Ends Saturday 10 bids 2 watchers
Us Mnh Postage Blocks Strips Partials Appr Fv $150!$77.96 Ends Thursday 4 bids 10 watchers
Us~mint Postage Stamps~fv $79.60~16 Sheets Unused~lt33$72.64 Ends Tuesday 2 bids 1 watcher
Mint Us Stamp Collection 302 303 304 305 306 307 309$72.00 Ends Thursday 5 bids 7 watchers
Us. 1970's Postage Lot. Mostly 8c Mnh. Face Value $109$71.02 Ends Thursday 5 bids 5 watchers
Us. 1920 Pilgrim #549-550. 8 Each Mnh. Cv$872$61.00 Ends in 11 hours 7 bids 3 watchers
Us. Non-denominated Postage Lot Mnh. Face Value $110+$59.00 Ends in 11 hours 5 bids 5 watchers
Us. 1938 $1+$2 Prexies Wholesale Mint. 21 Stamps. Look!$58.50 Ends in 11 hours 13 bids 15 watchers
Scott 533 2c Imperf Offset Mint Nh Value $190.00-$58.00 Ends Thursday 12 bids 15 watchers
Lot Of Us Postage Stamps Unused Face Value $67.90$54.99 Ends in 12 hours 7 bids 5 watchers
Forever Stamps Books Of 20 Total Of 6 Books$52.36 Ends in 6 hours 10 bids 6 watchers
Us 12 Pages 1997 Mnh Postage Sheets Panes Coils+!$51.00 Ends Wednesday 6 bids 10 watchers
Scott #573 Lincoln Memorial Stamp Nh Og $5 Never Used$51.00 Ends Tuesday 14 bids 16 watchers
Scott # 505 Error - Unused Og - Fine - W/disturbed Gum $50.00 Ends in 9 hours 5 bids 1 watcher
Us Stamps: 279 Plate Block Mint,og,hr (cv$185.00)$47.95 Ends Saturday 2 bids 2 watchers
Us Mnh Postage Partials Blocks Strips+! Appr Fv $100!$47.66 Ends Thursday 2 bids 8 watchers
Us Mnh Postage Blocks Strips Partials Appr Fv $100 Pt.2$47.00 Ends Thursday 4 bids 9 watchers
Us 14 Pages 1993-95 Mnh Postage Sheet Coils Panes+!$46.00 Ends Wednesday 7 bids 11 watchers
Us. 1932 Washington. 9 Diff Wholesale Mint. Cv$2056$46.00 Ends in 11 hours 5 bids 3 watchers
1923 Regular Issue $5.00 Freedom High Value #573 Mh Vf$43.00 Ends Tuesday 10 bids 5 watchers
New Forever Postage Stamps 5 Unused First Class Books $42.05 Ends Tuesday 5 bids 5 watchers
Us 11 Pages 1990-92 Mnh Sheet Strips Panes Express+!$42.00 Ends Wednesday 14 bids 8 watchers
Us Postage Stamp Lot Unused Face Value Over $107.44$41.98 Ends Sunday 2 bids 4 watchers
Scott # 646 (molly Pitcher) Block Of 14 Mnhog$41.01 Ends in 7 hours 10 bids
658-668 Very Fine Complete Set Of Kansas Overprints$41.00 Ends in 12 hours 8 bids 2 watchers
United Stated #c18 Mnh Sharp!$40.66 Ends in 4 hours 14 bids 6 watchers
1968 Usps Commemorative Mint Stamp Set Folder Type 2$39.99 Ends in 13 hours 1 bid 2 watchers
Usa 1904 Louisville Purchase 5c Scott 326 Mnh Cv $225$39.99 Ends in 18 hours 1 bid 2 watchers
Us Sc#561 Mnh 1923 9c Pse Xf 90 Jefferson $39.95 Ends Tuesday 1 bid 1 watcher
Us. 1938 30c-$5 Prexies Mint. #830-834. Look!$37.36 Ends in 11 hours 7 bids 9 watchers
Us Sc #664, 665, 667, 668 Kans Overprints Mh $99$37.00 Ends in 5 hours 11 bids 6 watchers
Mr Fancy Cancel 379 Xf Mnh 6c W/f Pse Cert Cv$85+++$37.00 Ends Sunday 4 bids 5 watchers
519 Perf 11 Double Line Wmk - Fine, No Gum$36.75 Ends Sunday 3 bids 4 watchers

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