Signed visiting card, 3,75 x 2,25 inch, signed in blue ballpoint ink "John Barber", in very fine condition.
|Profession||American physicist and electrical engineer, Nobel Prize in Physics (1956 and 1972)|
|Year of birth||1908|
|year of death||1991|
|Size in inch (1 inch = 2.5 cm)||3,75 x 2,25|
|Type of Autograph||cards / album pages|