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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Nystamps Us Stamp # 244 Mint Og H $2100 W/certU.s. #84 Rare Used W/cert - 2c Black W "d" Grill ($4,500)Nystamps Us Stamp # 30a Used $295 Red Cancel W/certConfederate States Of America, 1863 Loan Certificate..signed On BackHawaii #11sb Superb Never Hinged Gem With Hps Certificate "genuine"U.s. #545 Scarce Mint Nh W/cert - 1c Green, P11 Rotary ($400)U.s. #524 Mint Nh Beauty W/cert - $5 Green & Black ($360)Nystamps Us Stamp # 251 Mint Og H $375 W/certU.s. Stamps 1$ Columbian Scarce Jumbo Mint H Vf With Certificate Scv 1100U.s. #11 Choice Used Sup App W/ Cert - 3c Dull Red387 Vf Mint Og Nh Weiss CertU.s. #217 Choice Mint Vf W/cert - 30c Orange Brown ($250)528b Vf-xf Mint Og Nh Pse Cert Graded 85Scott #1a On Cover, 4 Margins W/ Weiss CertificateNystamps Us Stamp # 124 Mint With Gum H $650 W/certMr Fancy Cancel 15l5 D O Bloods Local On Cover To West Chester Cv$800 Weiss CertNystamps Us Canal Zone Stamp # 1 Mint Og H $650 W/certU.s. #749 Choice Mint Superb Nh W/cert - 1934 10c ParkNystamps Us Stamp # 1252a Mint Og Nh $750 W/cert390 Vf Mint Og Nh Pfc Cert474 Vf Mint Og Nh Copy Pfc Cert Perferation Indentation1900 Stock Certificate Dorothy Gold Mining Co. Cripple Creek, Co. 10,000 Shares!447 Vf Mint Og Nh Pfc Cert Small Corner Crease1864 Stock Certificate. Milwauke & Prairie Du Chien Rwy. W/ Rev Stamp. Civil WarNystamps Us Stamp # 78a Used $425 W/certU.s. #637 Choice Mint Superb Nh W/cert - 1929 5c BlueU.s. #650 Choice Mint Superb Nh W/cert - 1929 5c Aeronautics348 Vf Mint Og Hinged Pinchot CertNystamps Us Stamp # 78b Used $450 W/certMint Us #292 Western Cattle In Storm With Aps Certificate Cv$1400.00Nystamps Us Stamp # 262 Mint Og H $2750 W/certUs Scott# 15 - 10 Cent Washington - Cat $200 - Philatelic Foundation CertificateU.s. #216 Choice Mint Jumbo W/cert - 5c Indigo ($225)Nystamps Us Stamp # 252 Mint Og H $110 W/certNystamps Us Stamp # 601 Mint Og Nh W/certHawaii, #16, Used, Aps Cert. HawaiianNystamps Us Stamp # 97 Used $280 W/cert1945 Passed By Naval Censor Envelope #832 & 806 Prexies W/certificate Of ContentUsed Us #25 Washington Type I With Aps Certificate Cv$125.00Bep Souvenir Card Lobex ' 86 $ 10 Gold CertificateDr Jim Stamps Old Us Revenue Scott R24b 5c Certificate Used No ReserveDr Jim Stamps Old Us Revenue Scott R8c 2c Certificate Used No ReserveDr Jim Stamps Old Us Revenue Scott R44c 25c Certificate Used No ReserveDr Jim Stamps Old Us Revenue Scott R33c 10c Certificate Used No Reserve