415 records.
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1929 2c Edison's First Lamp, Flat Plate US #654 1929

1929 2c Edison's First Lamp, Flat Plate

$1.00- $225.00
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1929 2c Edison's First Lamp, Rotary US #655 1929

1929 2c Edison's First Lamp, Rotary

$0.30- $250.00
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1929 2c Edison's 1st Lamp,Coil Perf 10 US #656 1929

1929 2c Edison's 1st Lamp,Coil Perf 10

$1.85- $250.00
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1939 3c Printing Tercentenary US #857 1939

1939 3c Printing Tercentenary

$0.15- $25.00
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1940 1c John James Audubon US #874 1940

1940 1c John James Audubon

$0.25- $22.50
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1940 American Scientists 5V US #874-78 1940

1940 American Scientists 5V

$3.10- $5.00
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1940 2c Dr. Crawford W. Long US #875 1940

1940 2c Dr. Crawford W. Long

$0.15- $22.50
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1940 3c Luther Burbank US #876 1940

1940 3c Luther Burbank

$0.30- $35.00
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1940 5c Dr. Walter Reed US #877 1940

1940 5c Dr. Walter Reed

$0.35- $55.00
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1940 10c Jane Addams US #878 1940

1940 10c Jane Addams

$1.50- $280.00
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1944 3c Telegraph US #924 1944

1944 3c Telegraph

$0.20- $20.00
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1944 3c Motion Picture US #926 1944

1944 3c Motion Picture

$0.25- $25.00
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1947 3c Thomas A. Edison US #945 1947

1947 3c Thomas A. Edison

$0.15- $35.00
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1956 3¢ Benjamin Franklin US #1073 1956

1956 3¢ Benjamin Franklin

$0.15- $27.50
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1956 3¢ Pure Food and Drug Act US #1080 1956

1956 3¢ Pure Food and Drug Act

$0.15- $28.00
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1963 5c Science US #1237 1963

1963 5c Science

$0.15- $18.50
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1965 11c Int'l. Telecommunication Union US #1274 1965

1965 11c Int'l. Telecommunication Union

$0.75- $45.00
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1966 8c Albert Einstein US #1285 1966

1966 8c Albert Einstein

$0.15- $55.00
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1967 5c Voice of America US #1329 1967

1967 5c Voice of America

$0.15- $18.50
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1972 7c Benjamin Franklin US #1393D 1972

1972 7c Benjamin Franklin

$0.15- $40.00
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1973 6c Marconi's Spark Coil and Gap US #1500 1973

1973 6c Marconi's Spark Coil and Gap

$0.20- $18.50
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1973 8c Transistors and Printed Circuit US #1501 1973

1973 8c Transistors and Printed Circuit

$0.15- $19.50
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1973 15c Progress in Audio & Visual Electronics US #1502 1973

1973 15c Progress in Audio & Visual Electronics

$0.50- $37.50
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1974 10c Energy Conservation US #1547 1974

1974 10c Energy Conservation

$0.15- $25.00
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1976 13c Telephone Centennial US #1683 1976

1976 13c Telephone Centennial

$0.20- $30.00
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1976 13c Chemistry Centenary US #1685 1976

1976 13c Chemistry Centenary

$0.15- $32.00
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1977 13c Sound Recording US #1705 1977

1977 13c Sound Recording

$0.15- $33.50
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1977 Nation's Energy, Conservation 13c US #1723 1977

1977 Nation's Energy, Conservation 13c

$0.20- $3.20
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1977 13c Energy Conservation US #1723-24 1977

1977 13c Energy Conservation

$0.30- $30.00
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1978 13c Early Cancer Detection US #1754 1978

1978 13c Early Cancer Detection

$0.15- $30.00
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1978 15c Photography US #1758 1978

1978 15c Photography

$0.15- $29.50
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1978 15c Viking Mission to Mars US #1759 1978

1978 15c Viking Mission to Mars

$0.15- $34.50
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1979 15c Albert Einstein US #1774 1979

1979 15c Albert Einstein

$0.15- $37.50
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1982 37c Robert Millikan US #1866 1982

1982 37c Robert Millikan

$0.15- $135.00
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1981 18c International Year of the Disabled US #1925 1981

1981 18c International Year of the Disabled

$0.15- $45.00
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1982 20c Solar Energy US #2006 1982

1982 20c Solar Energy

$0.20- $3.20
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1982 20c Knoxville World's Fair US #2006-09 1982

1982 20c Knoxville World's Fair

$0.75- $58.00
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1982 20c Synthetic Fuels US #2007 1982

1982 20c Synthetic Fuels

$0.20- $3.20
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1982 20c Breeder Reactor US #2008 1982

1982 20c Breeder Reactor

$0.20- $3.20
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1982 20c Fossil Fuels US #2009 1982

1982 20c Fossil Fuels

$0.20- $3.20
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1983 20c Science & Industry US #2031 1983

1983 20c Science & Industry

$0.15- $45.00
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1983 20c Joseph Priestley US #2038 1983

1983 20c Joseph Priestley

$0.15- $45.00
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1983 20c Electrical Theories C Steinmetz US #2055 1983

1983 20c Electrical Theories C Steinmetz

$0.20- $3.20
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1983 20c American Inventors US #2055-58 1983

1983 20c American Inventors

$0.75- $53.00
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1983 20c Frequncy Modulation E.Armstrong US #2056 1983

1983 20c Frequncy Modulation E.Armstrong

$0.20- $3.20
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1983 20c Induction Motor N. Tesla US #2057 1983

1983 20c Induction Motor N. Tesla

$0.20- $3.20
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1983 20c First TV Camera P.T. Farnsworth US #2058 1983

1983 20c First TV Camera P.T. Farnsworth

$0.20- $2.50
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1984 20c Health Research US #2087 1984

1984 20c Health Research

$0.15- $50.00
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