1976, Flag, Airplane and Globe, 31c red, blue and black, top left corner sheet margin single with complete offset of the design on gum side, full OG, NH, VF, a common stamp is included (Image)

1990, Tropical Coast, 45c multicolored, top left corner sheet margin plate No.A1111 block of 16 (4x4), four pairs of the block are partly imperforate due to foldover, including pair imperforate horizontally, pair imperforate at top and between stamps and two pairs imperforate at top, all with diagonal perforation lines, full OG, NH, VF and reportedly unique item, Est. $1,500-$2,000 (Image)

1906, black surcharge (type e) Canal Zone 2c on Colombia Map stamp of 1p lake, complete sheet of 100 with missing margin at bottom and partially on the right, minor marginal perf separations, full OG, NH, mostly VF, C.v. $300 as 25 hinged blocks of four (Image)

BEAUTIFUL ASSEMBLY ON STOCKPAGES: 1904-58, several hundred mint stamps in singles or blocks of four, starting with overprints on Maps and Great Personalities stamps, representing postage, air post, officials, air post official and dues, many better items throughout, occasional flaws possible, but apparently with full OG, NH and F/VF, C.v. is over $7,000 either as hinged (for early NH stamps) or as singles in case of no price for NH blocks, Est. $5,000-$6,000 (Image)

1890, Webster, imperforate plate proof of 10c in green, horizontal pair printed on stamp paper without watermark, large part of OG with minor offset, VF, C.v. $325 (Image)

1910, Washington 2c carmine, top sheet margin plate No.5616 with imprint and star block of six, no gum on top part of the margin as always, full OG, NH, VF/XF (two bottom stamps), C.v. $185++ (Image)

1914, Panama-Pacific issue, 1c green, perforation 10, right sheet margin plate No.6880 block of six, slight perf reinforcement between top and middle stamps at left, otherwise full OG, NH, F/VF, C.v. $650 (Image)

1924, Washington, 2c carmine, perforation 10, top sheet margin block of ten (2x5), double paper variety on margin and six stamps at top, in addition upper perforation of the block shifted to the top for 10mm (paper underneath has normal top perforation), full OG, NH, fine and very scarce item, Est. $300-$400 (Image)

1932, Olympic Games in Los Angeles, 5c blue, full OG, NH, PSE Superb 98, Est. $150-$200 (Image)

1938-39, Presidential issue, $1, $2 and $5, set of three high values ($5 with slight internal crease), 11 FDC of 20c to $5 and 13 FDC for coil stamps, in addition 4 FDC of Great Personalities later issues, generally F/VF, total C.v. $640 (Image)

1968, Waterfowl Conservation, 6c multicolored, right sheet margin vertical pair imperforate between stamps, ''Mail Early...'' imprint, full OG, NH, VF, C.v. $250 (Image)

1972, Tom Sawyer, (8c) multicolored, bottom sheet margin single with black and red (engraved) colors omitted, full OG, NH, VF and scarce, C.v. $1,000 (Image)

1973, Progress in Electronics, 8c multicolored, left sheet margin single with tan (background) and lilac colors omitted, full OG, NH, VF, only 50 stamps are known to exist, C.v. $600 (Image)

1973, Christmas Tree, 8c multicolored, bottom sheet margin ZIP vertical strip of three, imperforate between first and second stamps, full OG, NH, VF, C.v. $225 (Image)

1974, Horses Rounding Turn, 10c yellow and multi, right sheet margin (plate No.35117) single with blue ''Horse Racing'' omitted, in addition red color (US Postage 10 cents) shifted to the top, full OG, NH, VF, C.v. $500++ (Image)

1974, Energy Conservation, 10c multicolored, top margin single with green and red colors omitted, full OG, NH, F/VF, C.v. $275 (Image)

1975, David W. Griffith, 10c multicolored, a single with brown (engraved) color omitted, full OG, NH, VF, C.v. $250 (Image)

1975, Banking and Commerce issue, 10c x2 multicolored, bottom left corner sheet margin horizontal se-tenant pair, ZIP inscription, brown and blue (litho) colors omitted, full OG, NH, VF and scarce, PF certificate for vertical pair of strips, C.v. $1,100 (Image)

1979, ''Betty'' Lamp, 50c tan, black and orange, complete pane of 100, plate No.39157, blind horizontal perforation variety, full OG, NH, VF, Est. $1,000-$1,200 (Image)

1979, Rush Lamp and Candle Holder, $1 multi, tan, orange and yellow colors omitted, block of four, full OG, NH, VF, C.v. $700++ (Image)

1978, Piano, 8.4c dark blue on yellow paper, horizontal imperforate pair of coil stamps, two-line pre-cancel ''WASHINGTON DC'', full original shiny gum, NH, VF, C.v. $500 (Image)

1981, 13-Star Flag over Independence Hall, 13c dark blue, red and brown red, right sheet margin imperforate block of four, tagging omitted, ZIP imprint on the edge, full OG, NH, VF, priced with ''-'' in the Cat., Est. $300-$350 (Image)

1976, Washington Reviewing Army at Valley Forge, pane of five 31c stamps, USA/31c missing on ''a'', ''b'', ''c'' and ''d'' stamps due to strong perforation shift to the top, full OG, NH, VF, C.v. $500 (Image)

1976, Christmas, 13c multicolored, bottom right corner sheet margin plate No's 37617-37619 imperforate block of six, full OG, NH, VF, C.v. $225++ (Image)

1978, Eagle ''A'' (15c) orange, top margin vertical strip of three, horizontal perforation is missing between 1st and 2nd stamps and placed diagonally between 2nd, 3rd and at the bottom, full OG, NH, VF, C.v. $500++ (Image)