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TIM COOK SIGNED AUTOGRAPH 8X10 PHOTO - APPLE CEO AFTER STEVE JOBS, VERY RARE PSA

$ 968 $ 580.79

1977 Dr. David Harker ( Pioneer in X-Ray,Medical Researcher),Signed letter,cover

$ 17.59 $ 10.55

Lewis Wayne Walker (Naturalist)- Signed Newspaper Photograph

$ 8.8 $ 5.28

FREDERICK C ROBBINS NOBEL 1954 MEDICINE FOR POLIO WORK S. 3X5 CARD (X711)

$ 8.8 $ 5.28

Jane Goodall Famed primatologist signed book “Chimpanzee Family Book”

$ 17.59 $ 10.55

James Watson signed 5x7 photo JSA Authenticated Nobel Prize DNA

$ 105.55 $ 63.33

Christiaan Barnard signed cover JSA Authenticated Performed 1st Heart Transplant

$ 61.55 $ 36.93

SAMUEL WESLEY STRATTON GEODETIC SURVEY MIT PHYSICIST ORIGINAL AUTOGRAPH SIGNATUR

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Envelope Hand-Addressed by Charles Darwin - Originator of Theory of Evolution

$ 1540 $ 924

Ronald G Wayne Apple Co Founder Signed Apple iTunes Gift Card PSA/DNA #4

$ 123.19 $ 73.91

Theodor Hansch signed business card 2005 nobel prize

$ 21.99 $ 13.19

WILLIAM H. WELCH - AUTOGRAPH LETTER SIGNED 08/21/1916

$ 528 $ 316.8

"Nobel Prize in Chemistry" Harry Kroto Signed 4X7 Embossed Card Todd Mueller COA

$ 87.99 $ 52.79

1984 Subrahmanyan Chandrasekhar SIGNED AUTOGRAPH NOBEL PRIZE PHYSICS EINSTEIN

$ 85.8 $ 51.48

MARSHALL HOLLOWAY - AUTOGRAPH LETTER SIGNED 07/17/1976

$ 792 $ 475.2

1973 FDC SIGNED JOHN BARDEEN ONLY 2 TIME WINNER NOBEL PRIZE 1956 & 1972 PHYSICS

$ 24.2 $ 14.52

JOSEPH LEIDY - AUTOGRAPH LETTER SIGNED 01/17/1885

$ 660 $ 396

"Nobel Prize in Medicine" James Watson Signed UPPER DECK Card Todd Mueller COA

$ 263.99 $ 158.39

JOHN F.W. HERSCHEL - MANUSCRIPT LETTER SIGNED 06/19/1870

$ 704 $ 422.4

"Father of Modern Ethnobotany" Richard Evans SchultesSigned Announcement COA

$ 351.99 $ 211.19

GEORGE WASHINGTON CARVER - AUTOGRAPH LETTER SIGNED 01/14/1931

$ 1980 $ 1188

Neil Degrasse Tyson Signed Index Card 3x5 Autograph Astrophysicist Cosmos

$ 123.2 $ 73.92

THOMAS A. EDISON - AUTOGRAPH MEMO SIGNED 12/26/1922 CO-SIGNED BY: JOHN V. MILLER

$ 1056 $ 633.6

DONALD W. DOUGLAS - AUTOGRAPH

$ 484 $ 290.39

HUDSON MAXIM - TYPED LETTER SIGNED 05/19/1917

$ 594 $ 356.4

Steve Jobs Wozniak Woz Signed San Jose Magazine Apple Computers Silicon Valley

$ 70.39 $ 42.23

"Operation The Game" John Spinello Hand Signed Pop autographed

$ 39.6 $ 23.76

🔥🔥 BILL GATES SIGNED AUTOGRAPHED BOOK MICROSOFT BUFFETT MAKE A CUT! PSA COA

$ 919.6 $ 551.76

STEVE WOZNIAK METAL BUSINESS CARD WOZ APPLE COMPUTERS

$ 791.99 $ 475.19

ROGER TORY PETERSON - AUTOGRAPH

$ 704 $ 422.4

Alexander Petrunkevitch Signed Photo Autographed Signature Arachnologist Spider

$ 110 $ 66

Clyde Tombaugh Prominent Astronomer Discovered Pluto Signed Card

$ 66 $ 39.6

Richard J. Gatling - Ink Signature with Closing Sentiments - Fine Condition

$ 792 $ 475.2

JOSEPH LISTER - THIRD PERSON AUTOGRAPH NOTE 04/08/1909

$ 792 $ 475.2

DR ROBERT JARVIK Authentic Hand Signed Autograph 4x6 Photo - ARTIFICIAL HEART

$ 0.66 $ 0.39

"Founding Father of Rocketry" Hermann Oberth Signed Postcard Todd Mueller COA

$ 114.39 $ 68.63

Harold Urey - Nobel Prize in Chemistry - Autographed First Day Cover

$ 0.87 $ 0.52

JEFF BEZOS SIGNED 8X10 PHOTO JSA AUTOGRAPH AMAZON LOA BILLIONAIRE BEEZOS RARE

$ 4399.99 $ 2639.99

JEFF BEZOS SIGNED 8X10 PHOTO JSA AUTOGRAPH AMAZON LOA BILLIONAIRE BEEZOS RARE

$ 4399.99 $ 2639.99

Guglielmo Marconi Autographed Signed Mounted Photo

$ 2639.99 $ 1583.99

Esther Christine Kisk - Wife of Robert Hutchings Goddard - Autographed FDC

$ 0.87 $ 0.52

Leland John Haworth - Particle Physicist - Autographed First Day Cover

$ 0.87 $ 0.52

Sydney Chapman - British Geophysicist - Autographed First Day Cover

$ 0.87 $ 0.52

Robert S Mulliken Autograph Card Nobel Prize Chemistry Molecular Orbital Theory

$ 110 $ 66

JOHN ERICSSON - AUTOGRAPH LETTER SIGNED 12/06/1859

$ 1056 $ 633.6

Michael I. Pupin autograph, signed card mounted

$ 297.87 $ 178.72

Nolan Bushnell Inventor of Atari Rare Signed Autograph comic book Atari force 2

$ 264 $ 158.4

US SENATOR ME INVENTOR PATENT OFFICE RUGGLES CIVIL WAR AUTOGRAPH LETTER SIGNED !

$ 8.79 $ 5.27

DAVID PACKARD, Co-Founded Hewlett-Packard, Autograph on First Day Cover

$ 110 $ 66

Signature Astronomer William K Hartmann Moon Made by Planet Impacting Earth

$ 8.79 $ 5.27

PETER COOPER - AUTOGRAPH LETTER SIGNED 07/15/1859

$ 440 $ 264

JIM JAMES D WATSON SIGNED 8x10 PHOTO NOBEL PRIZE DOUBLE HELIX DNA STRAND BECKETT

$ 1025.2 $ 615.12

Cut autograph by Inventor of Tetris Alex Pajitnov Authentic cut signature

$ 13.19 $ 7.91

J. R. Oppenheimer autographed card matted and framed 9x11 with b/w photo.

$ 572 $ 343.2

1954 K.L. Frost signed "Signaling Device Patent",with Manufacturer Agreement

$ 8.79 $ 5.27

RARE! "Gas Laser" Ali Javan Hand Signed Announcement Todd Mueller COA

$ 527.99 $ 316.79

Pioneer Botanist - Zoology Expert Edward Newman Deciphered Species Autograph

$ 13.19 $ 7.91

1977 Dr. David Harker ( Pioneer in X-Ray,Medical Researcher),Signed letter,cover

$ 17.59 $ 10.55

Antique Signed Autographed Portrait Photo William D Coolidge Physicist Inventor

$ 153.99 $ 92.39

1972 Fritz Albert Lipmann (Biochemist,Coenzyme A. Co-discoverer!) signed card

$ 8.79 $ 5.27

1967 Professor Carl J. Friedrich Harvard University,Theorist Signed Photograph!

$ 8.79 $ 5.27

2018 Leaf Executive Thomas Edison Cut Auto Signed 1/1 PSA DNA JSA BECKETT BAS

$ 2860 $ 1716

SIR HUMPHRY DAVY - AUTOGRAPH LETTER SIGNED 01/24/1822

$ 880 $ 528

1st BARON AVEBURY, John Lubbock SCIENTIST coined 'PALEOLITHIC ' & 'NEOLITHIC'

$ 17.6 $ 10.56

Bob Brier Signed 3x5 Index Card Autographed Signature Egyptologist

$ 39.6 $ 23.76

Albert Einstein - RARE Photograph Signed - In Front Blackboard While Lecturing

$ 6600 $ 3960

RONALD WAYNE Hand Signed Autograph 3X5 INDEX CARD - CO FOUNDER APPLE COMPUTER

$ 0 $ 0

CHARLES P. STEINMETZ - TYPED LETTER SIGNED 06/16/1897

$ 440 $ 264

CLYDE WILLIAM TOMBAUGH - TYPESCRIPT SIGNED 06/19/1991 WITH CO-SIGNERS

$ 374 $ 224.4

Ronald G Wayne Apple Co Founder Signed Apple iTunes Gift Card PSA/DNA #3

$ 123.19 $ 73.91

Charles Darwin - Autograph Note Signed - Theory Evolution Originator - 1875 COA

$ 3300 $ 1980

Mailing Envelope Hand-Addressed by Thomas Edison - w/ Early 20th Century COA

$ 440 $ 264

WILLIAM SHOCKLEY - AUTOGRAPH NOTE SIGNED

$ 158.4 $ 95.04

Steve Woz Wozniak SIGNED NEW Apple HD High Density Disk Mac PSA/DNA AUTOGRAPHED

$ 145.19 $ 87.11

Sir Edmund Hillary, Sir Vivian Fuchs, Antarctic Explorers, signed ArtCraft FDC

$ 145.19 $ 87.11

GEORGE WASHINGTON CARVER - AUTOGRAPH LETTER SIGNED 05/12/1932

$ 1232 $ 739.2

steve jobs autographed index card

$ 3432 $ 2059.19

Famed Astrophysicist Neil deGrasse Tyson Hand signed 8x10 (Inscribed)

$ 87.93 $ 52.76

DR. CHRISTIAAN BARNARD. Performed world's first human heart transplant. SIG

$ 17.6 $ 10.56

Czeslaw Milosz signed 1972 First Day Cover Jsa Authenticated

$ 66 $ 39.6

Jane Goodall Famed primatologist signed book “Chimpanzee Family Book”

$ 26.39 $ 15.83

HAROLD AGNEW Hand Signed Autograph 4x6 Photo - MANHATTAN PROJECT CHEMIST

$ 1.59 $ 0.95

GORDON S. SEAGRAVE. Burmese-born American missionary, physician and author. SIG

$ 17.6 $ 10.56

Charles James Sprague - important letter on the early study of fungi in America

$ 528 $ 316.8

George Biddell Airy SIGNED AUTOGRAPHED Manuscript ALS Astronomer Royal 1843

$ 83.6 $ 50.16

Francis Crick SIGNED Autographed First Day Cover FDC Cachet Scientist JSA COA

$ 439.98 $ 263.98

RONALD WAYNE Hand Signed Autograph 4X6 Photo - CO FOUNDER APPLE COMPUTER

$ 0 $ 0

RONALD WAYNE Hand Signed Autograph 9X11 LETTER - CO FOUNDER APPLE COMPUTER

$ 0 $ 0

GEORGE M. STERNBERG. First U.S. bacteriologist. Card Signed as Surgeon General.

$ 17.6 $ 10.56

James Pollard Espy - Signature of the Influential American Meteorologist

$ 22 $ 13.2

BUCKMINSTER FULLER - TYPED LETTER SIGNED 05/26/1970

$ 330 $ 198

DR. JONAS SALK - TYPED LETTER SIGNED 01/27/1959

$ 440 $ 264

DR. BENJAMIN WATERHOUSE. Physician and scientist. Pioneer in vaccinations, SIG.

$ 61.6 $ 36.96

Official Copy of Einstein's Atomic Bomb Letter to FDR SIGNED by Edward Teller

$ 880 $ 528

Autographed Artificial Heart Transplant Surgeon Cooley Authentic envelope FDC

$ 13.19 $ 7.91

Francis Crick 1962 Nobel Prize Double Helix DNA Molecule Signed Autograph Book

$ 439.99 $ 263.99

Cut autograph by Inventor of Tetris Alex Pajitnov Authentic cut signature

$ 17.59 $ 10.55

Inventor of Tetris Alex Pajitnov Authentic signature

$ 13.19 $ 7.91

DAVID PACKARD, Co-Founded Hewlett-Packard, Autograph on First Day Cover

$ 88 $ 52.8

Edward Teller Signed Autographed 3x5 Card JSA Certified Hydrogen Bomb

$ 70.35 $ 42.21