United States

1597b, Mint NH 15¢ Flag Stamp Gray Color Omitted ERROR With Normal - Stuart Katz

$258.50

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1597, MNH 15¢ Flag Block of Four With Solvent Smear ERROR - Stuart Katz

$47.00

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2980a, Mint NH Black 32¢ Color Omitted ERROR With Normal - Stuart Katz

$235.00

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2551a, Mint NH 29¢ Veterans Imperforate Between Pair ERROR - Stuart Katz

$282.00

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425, Mint 2¢ LH/NH Block With "Pink Back" Analine - Scarce! -- Stuart Katz

$75.00

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1622b, Mint NH Imperforate Block of Four From Sheet ERROR - Stuart Katz

$423.00

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1560a, Mint NH 10¢ Bicentennial Back Inscription Omitted ERROR - Stuart Katz

$108.10

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1890b, MNH 18¢ Flag Vertical Pair Imperforate Horizontal ERROR PFC - Stuart Katz

$470.00

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2092a, Mint NH XF 20¢ Ducks Imperforate Between ERROR - Stuart Katz

$258.50

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2764c, Mint NH 29¢ Flowers Imperforate Booklet Pane of 5 ERROR - Stuart Katz

$799.00

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1698b, MNH 13¢ Winter Olympics Imperforate Block of Four ERROR - Stuart Katz

$282.00

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2412, MNH 25¢ Stamp With Scarce Gold Color Shift ERROR & Normal - Stuart Katz

$32.90

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1271, MNH 5¢ Florida With Large Color Shift ERROR Zip Block of 4 - Stuart Katz

$56.40

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1919a, Denominations Missing and Doubled on ERROR Block of 8 Stamps Stuart Katz

$705.00

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1731, MNH 13¢ RARE Misperforated ERROR Pane of 50 Stamps - Stuart Katz

$376.00

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540, Mint NH F/VF Top Plate Block of Four Stamps Cat $175.00 - Stuart Katz

$75.00

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1825a, Mint NH Imperforate ERROR Pair - Veterans Admin Cat $375.00 - Stuart Katz

$277.30

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634b, VF NH VERY RARE Carmine Lake Plate Block Of Four With PSE - Stuart Katz

$3,750.00

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4002, Mint 24¢ Common Butterfly Misperforation ERROR - Stuart Katz

$46.95

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1822, MNH 15¢ Large Misperfed Shift Freaky Error Block of Four * Stuart Katz

$23.50

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492, Mint NH XF/Superb 2¢ Coil Pair - PSE Graded 95 * Stuart Katz

$175.00

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527, Mint VF NH Plate Block of Six Stamps Cat $350.00 - Stuart Katz

$175.00

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549, Mint VF LH 2¢ Plate Block of Six Stamps * Stuart Katz

$75.00

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1046, Mint VF NH 15¢ John Jay Fresh Sheet of 100 Stamps * Stuart Katz

$69.95

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2428, Mint NH 25¢ Perforation Shift Freak Error Margin Copy ** Stuart Katz

$30.97

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Love True Blue Love Birds Booklet 20 Stamps - 39 Cent Postage Stamps 3976

$15.95

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675, Mint NH 6¢ Plate Block of Four CV $750 - Stuart Katz

$425.00

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590, Mint NH 9¢ VF - Complete Sheet of 100 PSE SCV $3015.00 - Stuart Katz

$1,495.00

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Popular Singers Sheet of Twenty 29 Cent Postage Stamps Scott 2849-2853

$11.95

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1469, Large Misperforation Scarce ERROR Block of 8¢ Stamps Mint NH - Stuart Katz

$70.50

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Lillian Gilbreth Sheet of One Hundred 40 Cent Postage Stamps Scott 1868

$75.00

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2980b, Mint VF NH 32¢ Imperforate Pair Transitional Block Error - Stuart Katz

$559.30

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1833, MNH 15¢ Learning Pair - Perfs Shifted Freaky Error * Stuart Katz

$28.20

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1683, MNH 13¢ Massive Two Way Misperf Error With Normal * Stuart Katz

$32.90

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1459a, Mint NH 8¢ Scarce Misperfed Error Plate Block - Stuart Katz

$79.90

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628, Mint NH VF 5¢ Lot of TEN WHOLESALE Stamps CV $85 -- Stuart Katz

$39.95

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752, Unused (NGAI) Set of Matched Plate Blocks -- Stuart Katz

$79.95

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1507, Mint NH 8¢ Drastically Misperforated Error Block With Normal - Stuart Katz

$56.40

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773, MNH 3¢ California San Diego Sheet of 50 Postage Stamps * Stuart Katz

$19.95

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2514, Mint NH 25¢ Misperfed Error Sheet of 50 Stamps - Stuart Katz

$277.30

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1286, MNH 10¢ Misperf Shift Freak Error Plate Block - Stuart Katz

$46.95

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2868a, 29¢ Two Different Error Blocks Reverse Print & Under Inking - Stuart Katz

$211.50

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229, Mint VF LH 90¢ - Fresh! - Nice Centering - Stuart Katz

$450.00

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2389C, Mint NH 25¢ RARE Imperforate Between Major Error Block - Stuart Katz

$1,316.00

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1824, 15¢ Sensational Color Shift Error Pair With Normal * Stuart Katz

$83.66

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TDB82, Green ATM Test Pane Of Eighteen Stamps Statue Of Liberty - Stuart Katz

$12.95

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2541, $9.95 1991 Express Mail Full Sheet of 20 Stamps CV $515.00 - Stuart Katz

$275.00

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450, Mint NH 2¢ RARE Coil Line Pair - Cat $550.00 - Stuart Katz

$350.00

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2521, Large Misperforated ERROR Sheet of 100 Stamps - Stuart Katz

$329.00

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540a, Mint VF-XF NH Imperforate Between Block of Eight Cat $550.00 - Stuart Katz

$450.00

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631 Var, WITHOUT GUM BREAKERS - PLATE BLOCK - XF OG LH (3 stamps NH) Cat $450.00

$300.00

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530, RARE MISPERFORATION ERROR - TOP PLATE BLOCK OF SIX - Stuart Katz

$211.65

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1510c, MNH 10c - REMARKABLE FOLD OVER BOOKLET PANE ERROR - Stuart Katz

$183.30

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1930 Fancy Cancel Registered Cover Winchester, IND 1930 - Stuart Katz

$48.75

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RW49, Canvasbacks Federal Duck Stamp VF OG NH - Stuart Katz

$9.00

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RW47, Mallards Federal Duck Stamp VF OG NH - Stuart Katz

$9.50

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RW50, Pintails Federal Duck Stamp VF OG NH - Stuart Katz

$9.00

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RW43, Canada Geese DUCK STAMP VF OG NH - LOW PRICE!

$7.50

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RW53, Fulvous Whistling Federal Duck Stamp VF OG NH - Stuart Katz

$9.00

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RW70A, $15 Snow Geese DUCK Stamp Self-Adhesive Pane - Stuart Katz

$26.95

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R91a, $5 Mortgage Revenue Stamp - SUPERB & Sound Cat $200.00 - Stuart Katz

$180.00

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1999 32¢ Songwriters Sheet of 20 Stamps Scott 3103a - Stuart Katz

$11.95

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2544A, $10.75 1995 Express Mail Full Sheet of 20 Stamps CV $575.00 - Stuart Katz

$285.00

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Comic Strip Classics Sheet of 20 32¢ Stamps Scott 3000 Mint VF NH - Stuart Katz

$11.95

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1385, 6¢ HOPE STAMP WITH LARGE COLOR SHIFT ERROR

$33.84

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723, Pair - Line Pair And A Used Pair XF NH GEMS Cat $115.70 - Stuart Katz

$75.00

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1363, 3 DIFFERENT COLOR SHIFT ERRORS - HARD TO FIND!

$83.75

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1281 Var, "EE" MARKINGS BETWEEN STAMPS MAJOR ERROR

$140.06

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3054a, 32¢ ROSE IMPERFORATE & MISCUT PAIR ERRORS - RARE - Stuart Katz

$211.50

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3112ab, IMPERFORATE BLOCK OF FIVE STAMPS - SCARCE!

$148.05

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1324, TWO PLATE BLOCKS WITH TWO DIFF COLOR SHIFT ERRORS

$16.92

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2980, MNH TWO DIFFERENT COLOR SHIFT ERRORS

$37.60

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1455, LARGE BLACK COLOR SHIFT ERROR - SHEET OF 50 WoW

$277.30

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1846, 3¢ MISPERFED ERROR BLOCK SHOWS FULL GUTTER RARE!

$83.75

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1473, RARE REVERSE COLOR OFFSET ERROR - 8¢ PHARMACY

$33.84

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1950, RARE REVERSE COLOR OFFSET ERROR - F.D.R.

$38.07

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1891, PL#1 IN STRIP OF FIVE XF NH GEM Cat $360.00

$157.50

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589, Mint NH 8c Perfed 10 - F-VF BLOCK OF SIX Cat $360.00

$119.88

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1140, MINT NH 4¢ 2 DIFF MISPERFORATION ERRORS - SCARCE!

$42.30

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1361, MNH MISPERFORATED ERROR BLOCK OF 20 STAMPS John Trumbull - Stuart Katz

$94.00

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1394, BLUE COLOR ALMOST COMPLETELY MISSING ERROR PAIR

$42.26

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1857, MISPERFORATION ERROR MAKES FOR CHANGE OF DESIGN!

$21.15

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2015, MINT NH 20¢ MISPERFORATION ERROR - LIBRARIES

$21.15

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1094, U.S. FLAG MISPERFORATION ERROR BLOCK OF FOUR

$50.72

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2014, MINT NH REVERSE PRINTING ON GUM VARIETY

$33.84

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2579, MNH - AMAZING PAPER FOLD ERROR MAKES FOR WILD PERFORATIONS - Stuart Katz

$423.00

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1281, RARE MISPERFORATED ERROR PLATE BLOCK WITH NORMAL

$42.26

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1833, MINT NH MISPERFORATED ERROR PLATE BLOCK

$42.30

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1555, 10¢ SCARCE HUGE COLOR SHIFT ERROR - MINT NH

$42.26

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1394, RARE DOUBLE IMPRESSION VERTICAL PAIR MAJOR ERROR

$83.75

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2833a, RARE USED MISPERFORATION ERROR BOOKLET PANE

$42.30

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U586 Var, RARE ERROR GROUP OF 3 ENTIRES - EST $900.00 - Stuart Katz

$271.66

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1561 Var, 99% of BLACK MISSING FROM TOP STAMP - WoW

$84.56

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550, Mint 5¢ Superb OG NH - Highest Quality! - Stuart Katz

$400.00

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C12, Mint Fine+ OG NH - Wholesale lot of 83 stamps Cat $1,494.00 - Stuart Katz

$325.00

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1895, MNH 20c coils - FIVE PAIRS WITH INKING ERRORS - RARE GROUP! - Stuart Katz

$376.00

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