As with coins and baseball cards, in recent years some stamp collectors have started submitting their stamps to grading agencies for "expertising". Some of the well-known organizations which issue certs for stamps include PSE, Weiss, PF and APS.

Some stamps will be sold with an existing cert, and other sellers will offer the buyer the opportunity to have a stamp graded and examined by a third party before completing the transaction. As with any collecting purchase, cert or not, caveat emptor!


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Clubs & Associations

Most watched eBay auctions    

Ckstamps: Us Stamp Collection Scott#350 Mint H Og With Pf CertMomen: Ryukyu Japan Stamps #17 Mint Og Nh Rare Pf Cert Cat. $2,250 Lot #7007Ckstamps: Us Stamp Collection Scott#133 Mint Part Og With Pf CertUs Stamp:#unlisted 3c Essay Block Of 12 + Pf CertificateCkstamps: Us Stamp Collection Scott#124 Unused Ng With Pf Cert=wow= Us# 138a, 7U.s. #22 Scarce Used On Cover W/cert - 1c Blue, Type Iiia ($550)Ckstamps: Us Stamp Collection Scott#178 Mint Nh Og With Pf CertCkstamps: Us Stamp Collection Scott#93 Mint Og With Pf CertCkstamps: Us Stamp Collection Scott#123 Unused Ng With Weiss CertScott # 239, Us 1893, Columbian 30c. Mint Dog Vf-80 With P.s.e Certificate Ckstamps: Us Stamp Collection Scott#355 Mint H Og With Pf CertCkstamps: Us Stamp Collection Scott#231var Mint Nh Og "broken Hat" Weiss CertCkstamps: Us Stamp Collection Scott#500 Mint H Og With Aps CertCkstamps: Us Stamp Collection Scott#453 Mint H Og With Aps CertScott 315 5 Cent Lincoln 1908 Issue Imperforate Used - Needs CertificateCkstamps: Us Stamp Collection Scott#147 Mint Nh Og With Pf CertCkstamps: Us Stamp Collection Scott#73 Mint Lh Og With Psag CertCkstamps: Us Stamp Collection Scott#191 Unused Ng With Weiss CertU.s. Scott # 42p3 Mint F-vf Ng 1875 High Value (india Proof) W / Certificate U.s. #378 Mint Superb Gem W/cert - 5c Blue, SlwCkstamps: Us Stamp Collection Scott#157 Mint H Og With Weiss CertCkstamps: Us Stamp Collection Scott#35 Mint H Og With Pf Cert Grade 70U.s. #634a Scarce Mint W/cert - 2c Carmine, Ty Ii ($325)U.s. #377 Choice Mint Xf Nh W/cert - 4c Brown, Slw ($70)Scott # 238, Us 1893, Columbian 15c. Mint Og/nh Vf 80 With Pse Cert Ckstamps: Us Stamp Collection Scott#148 Unused Ng With Weiss CertScott #90 12 Cent Black Washington. E Grill. F-vf Weiss Cert NrCkstamps: Us Stamp Collection Scott#145 Mint H Og With Pf CertU.s. Scott # 42 P3 Mint F-vf Ng 1875 High Value (india Proof) W / Certificate U.s. 1847 - Scott #1 - 5 Cent Brown - Margins Added - Aps Certificate1851 U.s. Classic #17 W/ Blue Cancel Imperf With Certificate Cv $335.00U.s. #394 Used Pair W/cert - 3c Violet, P8.5 Coil ($210)U.s. Numismatic Souvenir Card--nsc 7, With $10 Silver Certificate, Ana, 1974Ckstamps: Us Stamp Collection Scott#150 Unused Ng With Weiss CertMarilyn Monroe $0.32 Cent Stamp With Certificate Of Authenticity-collectible!#2492i Error Pane Mnh 6 Pairs And Label Pair Missing Vertical Die Cuts Pse CertMr Fancy Cancel Scott R24b Used 5c Certificate Cv$15Ckstamps: Us Stamp Collection Scott#297 Mint Nh Og With Pf Cert Cv$1901020, Louisiana Purchase, Pse Graded Superb 98 Nh Certificate, Smq$55552, 1923 1c Franklin, Pse Graded Xf 90j Nh Certificate, Smq $15 For 90U. S. Certificate Of Mailing Forms (13) Franked And Used In The 1960s With......3 Bob Stamps On 1930 Irving Trust Stock Certificate American Bank Note CompanyCkstamps: Us Stamp Collection Scott#189 Unused Regum With Weiss CertMr Fancy Cancel Scott R24b Used 5c Certificate Hand Stamped Cancel Cv$15U.s 1977 Certificate Of Mailing With 10c Jefferson Memorial Stamp, UsedU.s 1977 Certificate Of Mailing With 10c Meter Stamp, Used, Pasadena PostmarkU.s 1979 Certificate Of Mailing With 15c Ft. Mchenry Flag Stamp, Used, Sc 1597U.s 1975 Certificate Of Mailing With 5c Re-drawn Washington Stamp, Used-sc-1283bCkstamps: Us Stamp Collection Scott#308 Mint Nh Og With Pf CertDr Jim Stamps Old Us Revenue Scott R33 10c Certificate Used No Reserve934, U.s. Army, Pse Graded Superb 98 Nh Certificate, Smq $601084, Davils Tower National Monument, Mint Nh, Pse Grade 98 Certificate, Smq $55Marriage Certificate, January 6, 1866, Civil War Era, U.s. Revenue CancelRare 1918 War Savings Certificate Stamp Book, One Stamp Attached U.s. Numismatic Souvenir Card--nsc 6, With $5 Silver Certificate, Ana, 197355 Cent Swans Love Stamp On Usps Certificate Of Mailing10 Postage Due Stamps 1931-59, 4 Special Delivery 1911,22, 51 & 54, 1955 Cert.Us Revenue Stamp Scott R24c - 5 Cent Certificate Blue Son Stamp Cancel Dr Jim Stamps Old Us Revenue Scott R24 5c Certificate Used No Reserve