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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Mr Fancy Cancel 10 Cover July 4 1851 4th Day Red Richmond Cds Aps Cert Cv$290+++Mr Fancy Cancel 79 Overall A Grill Blue Cancel Cv$1625 Weiss Cert Very RareDrbobstamps Us Scott #r150 Very Scarce Well Centered Stamp W/aps Cert Cat $800Drbobstamps Us Scott #292 Used 1.00 Trans-mississippi W/ Pf CertificateMr Fancy Cancel 72 90c S&e Stc-21 Star With U In Circle Cv$600++ Weiss CertMr Fancy Cancel Csa 16xu1 Cover Charleston Prov Weiss Cert Ex-kauffman Cv$2750Hawaii, #10, Unused, Hps Cert. HawaiianMr Fancy Cancel 138 H Grill Cover St Louis To Baden Germany Weiss Cert Cv$675++U.s. #64b Used W/cert - 3c Rose Pink ($150)Mr Fancy Cancel 85b Z Grill Unused No Gum Cv$6750 Weiss Cert Very RareMr Fancy Cancel 138a I Grill Used Sound Light Cancel Weiss Cert Cv$1400 No ReserU.s. #e11c Choice Mint Nh W/cert - 10c Blue, P11 ($190)Mr Fancy Cancel 8a Sound Four Margin Position 95r2 Weiss Cert Cv$900 No ReserveNoblespirit No Reserve (krid) Us 1 With Pf Certificate= $650 Red CancelNystamps Us Stamp # 14 Used $160 W/certNoblespirit No Reserve Extremely Rare #c76-c76a Error Sheet With Pse CertificateNystamps Us Postage Due Stamp # J58 Used $1600 W/certNystamps Us Canal Zone Stamp # 67 Mint $500 W/certNystamps Us Postage Due Stamp # J56 Mint Og H $85 W/certMr Fancy Cancel Us #1 Appears Unused Removed Cancel 4 Margin Weiss Cert No ReserHawaii, #8, Used, With Hps Cert. Scarce HawaiianNystamps Us Postage Due Stamp # J42 Mint Og H $450 P# Strip Of 3 W/certCkstamps : Us Stamps Scott #21 1c Type Iii Franklin 1857 Used Cv$2500 W/cert.Sb1 Stamps - 1922 $5 'america' W/2015 Weiss Cert, Graded 95/98; Sc. 573; M/vlhSb1 Stamps - 1915 5c Pan-pacific Expo W/2015 Weiss Cert.; Sc. 403; Vf/mnhScott #322 Of 1908th Used With Aps Certificate#189 Used, 15 Cent, Red-orange, 1879, With Pse CertificateNoblespirit Noreserve (krid) Excellent Superlative Gem Xf Jumbo Nh W/certificate541 3c Rotary Stamp With Pse Cert - Cv$40.00Certificate Of Mailing With 55 Ct Morrill Great American & 10 Ct. Stillwell Us Postage Stamp Revenue:certificate 1862 25 Cent.sc.#r44c.unused.mnh#r33b 10 Cents Certificate Revenue Stamp Used ADr Jim Stamps Old Us Revenue Scott R24 5c Certificate Used No Reserve#268 3c Jackson - Great Mint Og - With Pl# - Pse Cert Cv$37.50#255 5c Grant - Cert Mint Og - With Pl# - Pse Cert Cv$110.00212 1c Franklin Stamp With Pse Cert - Cv$100.00U. S. 24 Cents, George Washington Issue, (sc. No. 78) W/ Recent Aps CertificateR44c 25¢ Revenue: Certificate (1862) Circular Date StampUs Postage Stamp Revenue:certificate 1862 25 Cent. Precacled.# R44c.mnh#r33c 10 Cents Certificate Revenue Stamp Used CDr Jim Stamps Old Us Revenue Scott R44 25c Certificate Pair Used No Reserve