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

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Drbobstamps Us Scott #1a Mint Og Rare Stamp With Pse Certificate, Cat $6750Drbobstamps Us Scott #292 Mint Well Centered Scarce Stamp Graded Pse CertificateDrbobstamps Us Scott #288 Mint Og Nh Stamp With Clean Graded Pse CertificateDrbobstamps Us Scott #499 Mint Og Nh Jumbo Gem Stamp With Clean Pf CertificateDrbobstamps Us Scott #79-e15c Mint Og Scarce Stamp, Clean Graded Pse CertificateDrbobstamps Us Scott #24 Used Stamp With Clean Pse CertificateCkstamps : Us Stamps Scott #2 10c Black 1847 Used Regum 2014 Cv$1000 W/pse Cert.Ckstamps: Us Stamp Collection Scott#440 Mint Og With Pf Cert[seb25] Usa 1851 Scott 7 Stamp Used - See CertificateDrbobstamps Us Scott #546 Mint Og Nh Stamp With Clean Pf Certificate[seb28] Usa 1893 Scott 242 Stamp Used - See CertificateU.s. #22 Choice Xf App W/cert - 1c Blue, Type Iiia ($500)U.s. #400 Choice Mint Superb App Nh W/cert - 10c Pan-pacific ($270)Drbobstamps Us Scott #366 Mint Og Nh Scarce Stamp Clean Graded Pse Certificate[seb31] Usa 1930 Scott C14 Stamp Used - See Certificate[seb21] Usa 1860 Scott 37a Stamp Used - See Certificate[seb13] Usa 1920 Scott 533 Stamp Used - See CertificateRare Lot Of #ux18 Errors & Freaks Incl Po Miscut W Cert Please Read[seb29] Usa 1909 Scott 353 Stamp Used - See Certificate[seb16] Usa 1862 Scott 70 Stamp Used - See Certificate[seb2] Usa 1869 Scott 117 Stamp Used - See Certificate[seb3] Usa 1869 Scott 116 Stamp Used - See Certificate[seb5] Usa 1869 Scott 115 Stamp Used - See CertificateU.s. #396 Choice Mint Nh Pair W/cert - 5c Blue, P8.5 Coil ($375)Sb1 Stamps - Lovely 1917 50c Franklin W/2014 Weiss Cert.; Sc. 517; Xf/superb; Rg[seb7] Usa 1867 Scott 89 Stamp Used - See Certificate[seb24] Usa 1851 Scott 17 Stamp Used - See Certificate[seb23] Usa 1857 Scott 24 Stamp Used - See Certificate[seb17] Usa 1861 Scott 69 Stamp Used - See Certificate[seb11] Usa 1912 Scott 423 Stamp Used - See Certificate[seb8] Usa 1867 Scott 92 Stamp Used - See Certificate[seb27] Usa 1890 Scott 229 Stamp Used - See Certificate[seb20] Usa 1861 Scott 63 Stamp Used - See Certificate1996 Sc 3112c Major Imperf Error With Certificate Cv $50[seb9] Usa 1870 Scott 152 Stamp Used - See CertificatePioneer Mining Co. R.i. Stock Certificate 1901, 30 Shares W Documentary StampSeries Of 1918 War Savings Certificate[seb15] Usa 1863 Scott 76 Stamp Used - See Certificate[seb12] Usa 1916 Scott 450 Stamp Used - See Certificate491 Used - Rare Type Ii Coil, Perf 10 Vert. - No Wmk - With Pse Cert - Cv=$800U.s. #pr72 Unused W/cert - $3 Newspaper ($250)[seb1] Usa 1869 Scott 119 Stamp Used - See Certificate[seb18] Usa 1861 Scott 68 Stamp Used - See Certificate[seb6] Usa 1867 Scott 97 Stamp Used - See Certificate[seb4] Usa 1869 Scott 112 Stamp Used - See CertificatePioneer Mining Co. R.i. Stock Certificate 1901, 20 Shares W Documentary Stamp[seb30] Usa 1921 Scott 546 Stamp Used - See Certificate[seb26] Usa 1870 Scott 153 Stamp Used - See Certificate[seb10] Usa 1908 Scott 331 Stamp Used - See Certificate[seb14] Usa 1923 Scott 552 Stamp Part Of Gum - See CertificateGena '87 Souvenir Card "$20 Gold Certificate (back)" Cherry Hill NjIpms '87 Souvenir Card "$20 Gold Certificate (back)" Memphis TennesseeAna '89 Souvenir Card "$20 Gold Certificate Republic Of Hawaii" Pittsburgh Pa Dr Jim Stamps Old Us Revenue Scott R33 10c Certificate Used No Reserve489, 3c Washington Rotary Single, Pse Graded Xf-sup 95 Nh Certificate, Smq $75Us Scott # 64 Pink 3 Cent Washington - Civil War Era W/ Weiss Certificate!!Us #290 Used Xf With Pse Cert Graded 80959, 1948 Women's Progress, Pse Graded Superb 98 Nh Certificate, Smq $55[seb22] Usa 1857 Scott 26 Stamp Used - See Certificate[seb19] Usa 1861 Scott 65 Stamp Used - See Certificate