627, 1926 2c Sesquicentennial Exposition, listing copy M-43, similar to W-2, Dorothy Knapp hand painted cachet with May 10, 1926 Philadelphia Exposition slogan cancel, unique (Estimate $2,500-3,000)rnLast sold at public auction March 31, 2007 for $3,802 including premium. (Image)

CV. 1,500

645, 1928 2c Valley Forge, M-78 listing copy, W-1, Dorothy Knapp hand-painted cachet with May 26, 1928 "Cleveland Philatelic Sta" cancel, painted ca. 1939, unique and Very Fine (Estimate $1,500-2,000) (Image)

CV. 700

645, 1928 2c Valley Forge, M-unlisted, W-4, Dorothy Knapp hand-painted cachet with May 26, 1928 Washington, DC cancel, painted ca. 1943-44 on Hammelman-serviced cover, unique and Very Fine (Estimate $1,500-2,000) (Image)

CV. 700

645, 1928 2c Valley Forge, M-unlisted, W-7. Dorothy Knapp hand painted cachet with Norristown, Pennsylvania May 26, 1928 machine cancel on Nickels serviced cover, painted ca. 1943-44, unique and Very Fine (Estimate $1,500-2,000) (Image)

CV. 700

654, 1929 2c Electric Light Jubilee, M-unlisted, W-1, Dorothy Knapp hand-painted cachet with June 5, 1929 Menlo Park, New Jersey cancel, unique, painted ca. 1943-44 (Estimate $1,500-2,000) (Image)

CV. 900

681, 1929 2c Ohio River Canalization, M-58 listing copy, W-1, Dorothy Knapp hand-painted cachet with Washington, DC October 21, 1929 slogan cancel to England, Very Fine,unique, painted ca. 1940-41 (Estimate $1,500-2,000)rnLast sold at public auction April 8, 2005 for $1,763 including premium. (Image)

CV. 900

682, 1930 2c Massachusetts Bay Colony, M-unlisted, W-1, Dorothy Knapp hand-painted cachet with Boston, Massachusetts April 8, 1930 cancel, Very Fine, unique, painted ca. 1943-44 (Estimate $1,500-2,000) (Image)

CV. 900

683, 1930 2c Carolina-Charleston, M-unlisted, W-2, Dorothy Knapp hand-painted cachet with Charleston, South Carolina April 10, 1930 cancel, Very Fine,unique, painted ca. 1943-44 (Estimate $1,200-1,500) (Image)

CV. 725

689, 1930 2c Von Steuben, M-unlisted, W-1, Dorothy Knapp hand-painted cachet with New York, New York September 17, 1930 cancel, Very Fine, unique, painted ca. 1940-41 (Estimate $1,500-2,000)rnLast sold at public auction March 31, 2007 for $2,073 including premium. (Image)

CV. 900

690, 1931 2c Pulaski, M-unlisted, W-1, Dorothy Knapp hand-painted cachet with Toledo, Ohio January 16, 1931cancel, Very Fine, unique, painted ca. 1943-44 (Estimate $1,200-1,500) (Image)

CV. 725

702, 1931 2c Red Cross, M-unlisted, W-2, Dorothy Knapp hand-painted cachet with Dansville, New York May 21 cancel, unique and Very Fine, painted circa 1944 (Estimate $1,200-1,500) (Image)

CV. 700

703, 1931 2c Yorktown, M-55c (incorrectly identified as Ralph Dyer), W-1, Dorothy Knapp hand-painted cachet, created ca. 1939, Very Fine and unique (Estimate $2,000-3,000)rnLast sold at public auction March 31, 2007 for $2,304 including premium. (Image)

CV. 1,200

704-15, 1932 ½c-10c Washington Bicentennial, M-103 a-l, W-2, Dorothy Knapp hand-painted cachets with Washington, DC January 1, 1932 cancels, beautiful matched typed addressed set that is the finest extant, painted ca. 1943-44, only a few sets known (Estimate $8,000-10,000) (Image)

CV. 4,500

724, 1932 3c William Penn, M-unlisted, W-1, Dorothy Knapp hand-painted cachet with New Castle, Delaware October 24, 1932 cancel, unique, painted ca. 1943-44 (Estimate $1,200-1,500) (Image)

CV. 725

727, 1933 3c Newburgh, M-unlisted, W-4, Dorothy Knapp hand-painted cachet with Newburgh, New York April 19, 1933 cancel, Very Fine, unique, painted ca. 1943-44 (Estimate $1,200-1,500) (Image)

CV. 725

730a, 1933 1c Century of Progress Imperforate, M-17 listing copy, W-1, Dorothy Knapp hand-painted cachet with Chicago, Illinois August 25, 1933 cancel, Very Fine, unique, painted ca. 1942 (Estimate $1,200-1,500) (Image)

CV. 725

737-38, 1934 3c Mother's Day, M-unlisted, W-unlisted, Dorothy Knapp hand-painted cachet with Washington, DC May 2, 1934 cancel, Very Fine, unique, painted ca. 1943-44 (Estimate $1,200-1,500) (Image)

CV. 725

774, 1935 3c Boulder Dam, M-25, W-5, Dorothy Knapp hand-painted cachet with Boulder City, Nevada September 30, 1935 cancel, painted ca. 1943-44, Very Fine and rare (Estimate $1,500-2,000) (Image)

CV. 900

774, 1935 3c Boulder Dam, M-27 listing copy, W-1, Dorothy Knapp hand-painted cachet with Boulder City, Nevada September 30, 1935 cancel, unique, painted ca. 1939, Very Fine (Estimate $1,500-2,000)rnLast sold at public auction March 31, 2007 for $2,073 including premium. (Image)

CV. 900

782, 1936 3c Arkansas Centennial, M-unlisted, W-4, Dorothy Knapp hand-painted cachet with Little Rock, Arkansas June 15, 1936 cancel, Very Fine, painted ca. 1939, unique (Estimate $1,500-2,000)rnLast sold at public auction February 28, 2006 for $1,441 including premium. (Image)

CV. 900

783, 1936 3c Oregon Territory, M-112 listing copy, W-3, Dorothy Knapp hand-painted cachet with Missoula, Montana July 14, 1936 cancel, Very Fine, painted ca. 1943-44, unique (Estimate $1000-1500) (Image)

CV. 600

795, 1937 3c Ordinance of 1787, M-unlisted, W-3, Dorothy Knapp hand-painted cachet with New York, New York July 18, 1937cancel, Very Fine, painted ca. 1943-44, unique (Estimate $1,200-1,500) (Image)

CV. 725

804b, 806b, 807a, 1939 1c-3c Presidential Series Booklet Panes, M-unlisted, W-1, Dorothy Knapp hand-painted cachets with Washington, DC Jan 27, 1939 cancels, Very Fine, painted ca. 1943-44, unique set (Estimate $1,500-2,000) (Image)

CV. 900

836, 1938 3c Delaware Tercentenary, M-87 listing copy, W-1, Dorothy Knapp hand-painted cachet with Wilmington, Delaware June 27, 1938 cancel, Very Fine, painted ca. 1943-44, probably unique (Estimate $1,200-1,600)rnLast sold at public auction November 12, 2016 for $930 including premium. (Image)

CV. 725

837, 1938 3c Northwest Territory Sesquicentennial, M-57 listing copy, W-2 variety, Dorothy Knapp hand-painted cachet with Marietta, Ohio July 15, 1938 cancel, Very Fine, painted ca. 1943-44, unique design (Estimate $1,500-2,000)rnLast sold at public auction December 1, 2005 for $1,727 including premium. (Image)

CV. 900