1964 American Music, 5c red & black, blue color omitted, also 5c Florida, yellow omitted, both n.h., v.f., cat. $850 (Cat No. 1252a,1271a) (Image)

Cat. $850, Est.US$250

1969 Professional Baseball, 6c yellow, red, green, black omitted (inscriptions and value), n.h., v.f., with regular stamp included for comparison, cat. $500 (Cat No. 1381a) (Image)

Cat. $500, Est.US$250

1971 Space Achievement, 8c se-tenant horizontal pair, blue & red colors (litho.) omitted, n.h., v.f., with regular pair included for comparison, cat. $950 (Cat No. 1435d) (Image)

Cat. $950, Est.US$300

1971 Emily Dickinson, 8c multicolored, black and olive (engr.) omitted (inscriptions and value), n.h., v.f., 1999 APS certificate, with regular stamp included for comparison, cat. $500 (Cat No. 1436a) (Image)

Cat. $500, Est.US$150

1972 Tom Sawyer, right sheet margin single, red & black (engr.) omitted, n.h., v.f., cat. $800 (Cat No. 1470b) (Image)

Cat. $800, Est.US$250

1974 Energy Conservation, 10c multicolored, bottom sheet margin single, orange & green omitted, also another error, green omitted, p.m., v.f., with regular stamps included for comparison, cat. $675 (Cat No. 1547b,c) (Image)

Cat. $675, Est.US$250

1975 D.W. Griffith, 10c multicolored, brown (engr.) omitted, n.h., v.f., with regular stamp included for comparison, cat. $450 (Cat No. 1555a) (Image)

Cat. $450, Est.US$150

1975 Space Issue, 10c Mariner, red and dark yellow omitted, n.h., v.f., with regular stamp included for comparison, cat. $750 (Cat No. 1556a) (Image)

Cat. $750, Est.US$200

1979 $1.00 Rush Lamp & Candle Holder, intaglio brown color inverted, n.h., v.f. The so-called CIA invert is one of the best known inverted color errors in United States philately. These stamps were discovered by an on-duty CIA employee who teamed up with some colleagues to purchase the pane from a post office. Saving a copy each, the group later sold the bulk of the sheet to a prominent stamp dealer. News of the error reached CIA officials who sought to claim ownership and US Postal authorities who tried to recover the stamps. Official queries, threats, and even job losses followed the group until the sale of the pane was ruled legal. Because the number of existing CIA inverts approximately equals the number of existing Inverted Jennies (examples of C3a regularly bring six-figure sums at auction), it may be said that current values for 1610c are far too low. This exceptional copy is accompanied by a 2014 PFC graded "XF 90", cat. $17000 (Cat No. 1610c) (Image)

Cat. $17000, Est.US$15,000

1981 three different errors, including 6c Edna Millay, 18c Remington and American Bicentennial 18c pair, each black or brown omitted, n.h., v.f., cat. $665 (Cat No. 1926a,1934b,1938b) (Image)

Cat. $665, Est.US$150

1984 Waterfowl Preservation, 20c blue, horizontal strip of three imperf. vertically and at margin at right, n.h., v.f. (catalogued $275 for a pair) (Cat No. 2092a) (Image)

Est.US$150

1986 Ameripex, booklet pane of four (without selvage), black omitted, tied on unaddressed cacheted FDC, unofficial Dayton, Ohio Jan.23, 1986 postmarks, v.f., with AFDCS certificate (Cat No. 2198-2201b) (Image)

Est.US$150

1987 25c Honeybee, black ("25c USA" omitted), horizontal pair, n.h., v.f., cat. $1000 (Cat No. 2281c) (Image)

Cat. $1000, Est.US$250

1987-89 U.S.- Morocco, CPA and Bill of Rights, three different, each with black (engr.) omitted, n.h., v.f., with two regular stamps included for comparison, cat. $830 (Cat No. 2349a, 2361a, 2421a) (Image)

Cat. $830, Est.US$250

1993 Sporting Horses, se-tenant block of four, black (engr.) omitted, n.h., v.f., cat. $500 (Cat No. 2759b) (Image)

Cat. $500, Est.US$250