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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Ckstamps: Us Stamp Collection Scott#390 Mint Nh Og Line Pair With Pf CertCsa Provisional 1861 Sc #26x1 Fredericksburg, Va 5c Blue Used On Piece W/cert. Ckstamps: Us Stamp Collection Scott#442 Mint Nh Og Line Pair With Pf CertCkstamps: Us Stamp Collection Scott#412 Mint Nh Og Line Pair With Pf CertCsa Provisional 1861 Sc #52xu2 Lynchburg, Va 5c Black On Amber (cs) W/ Cert. Mr Fancy Cancel Csa 9 Ten Mobile Ala 1863 Dcds Vf Appearing Csa Cert Cv$550Mr Fancy Cancel 182 Huge Jumbo Margins Sound Pse Cert As Grade 85 Vf-xfU.s. #595 Scarce Mint Nh W/cert - 2c Carmine P11 Rotary ($500)Us Scott #12 Vf Imperf Stamp With Pe CertCsa Provisional 1861 Sc #68xu1 5c Red Raleigh, Nc Used Entire W/ Certificate. Mr Fancy Cancel 449 2c Washington Coil Sound Used Pf Certificate Scarce+ Cv$600Csa Provisional 1861 Sc #16xu4 Charleston, Sc 5c Blue Unused (cs) W/ Cert. Mr Fancy Cancel 2479b Fawn Red Omitted Efo Vf Mint Never Hinged Pse Cert Cv$500Ckstamps: Us Stamp Collection Scott#231var Mint Nh Og "broken Hat" With Pse CertCkstamps: Us Stamp Collection Scott#446 Mint H Og With Pf CertCkstamps: Us Stamp Collection Scott#218 Perry Used Large Margin With Pf CertCkstamps: Us Stamp Collection Scott#455 Mint Nh Og Line Pair With Pf CertU.s. #67a Used W/cert - 5c Brown Yellow ($1,100)Us Scott # 10 Type 1 Used Includes Weiss Cert; Scv $200.00Ckstamps: Us Stamp Collection Scott#500 Used With Weiss CertUs Scott #70a 24c Washington Stamp With Perfect Son Cancel Pse CertNoblespirit No Reserve (jg) Excellent U.s. 1a With Aps Cert. = $900 Cv DarkMr Fancy Cancel Scott 1370a Mnh 6c Black Omitted Efo Certificate Cv$500 #586Mr Fancy Cancel 3lb1 Carrier Stamp Penny Post Pelure Paper Mng Pf Cert Cv$375Us Scott #21 Type Iii Plate #4 C Relief Pos 23l4 With Cert Cv $1800Nystamps Us Stamp # 239 Mint Og Nh $750 CertificateMr Fancy Cancel Scott 1436a Mnh 8c Black & Olive Omitted Efo Cert Cv$500 #587Ckstamps: Us Stamp Collection Scott#273 Mint H Og With Aps CertNoblespirit No Reserve (jg) Fresh Us 39 Mint Ng W/ Weiss Cert. =$1,100 CvNoblespirit No Reserve (lau)/12 Us 18 W/ Aps Cert =$550 Cv Light Blue CancelMr Fancy Cancel O31 15c Justice Department Official V/vf Psag Cert Cv$200Us Scott # E3 Mint / Vf / Lh Includes Weiss Cert; Scv $300.00Ckstamps: Us Stamp Collection Scott#250 Mint Nh Og Large Margins With Pse CertScott #20 1c Blue, 3 Singles On Cover Tied By 3 Paid Cancels & Cds W/ Weiss CertMr Fancy Cancel 114 Vf Sound Brownish Red Target Cancel Pf Cert Unlisted Color Usa Early Revenues Lot (appx 50 Items) Express Certificate(g3212)Usa Certificate Conveyance Contract Old Revenues(45+stamps)g3209Ckstamps: Us Stamp Collection Scott#304 Mint Nh Og With Pf Cert1960 5¢ Certificate Of Mailing, 5¢ Liberty Series Single Franking $20+Usa Old Revenues Certificate Mortgage Lot(31 Stamps)g3313Usa Old Revenues Bank Check Certificate Lot(22 Stamps)g3316Noblespirit No Reserve Scarce U.s. E11c With Weiss Certificate = $90 Cv Special Usa R44 Revenue 25c Certificate (24 Stamps)g3287Us# 235a- 6c Columbian Issue- Mint Nh- W/pf. Certificate- Scott Cat. $160.001898 San Domingo Gold Mining Hydraulic Mining Stock Cert 1.70 Battleship RevenueU.s. Scott No. 15, 10¢ 1851 Type Iii, Used W/ Weiss CertificateUsa R44 Revenue 25c Certificate (24 Stamps)g3288Us Scott 757-1935 2 Cent Grand Canyon-imperf-plate No 21254-with Pse Cert.m/nhBuffalo Stamps, Scott #189, 1879 Softpaper Issue, W/ Pf Cert But Damaged SinceUsa Old Revenues Bank Check Life Ins.certificate (25 Stamps)g3315Usa Old Revenues Certificate Mortgage Lot(24 Stamps)g3314Usa R33 Revenue 10c Certificate(21 Stamps)g3289Usa R46 +r44 Insurance & Certificate 25c Revenue(14 Stamps)g3286Usa R33 Revenue 10c Certificate(21 Stamps)g3290Mr Fancy Cancel Scott 146 Boston Mass Certificate 1872 Cvr #143Usa #24 Single & Pair Used On Cover With Certificate Free ShippingUsa 1969 Mechanical Stamp On Certificate Of Mailing To Belgium.............r6550Usa Early Certificate Insurance Revenues On And Off Piece 25c&$1(30 Stamps)g3208Scott#r7a, 2c Certificate, Blue, Imperf, Used Single.Dr Jim Stamps Old Us Revenue Scott R33 10c Certificate Used No Reserve