Leonhard Euler
1763 · Fair
€140
Albert Einstein, H 1864-1909 Minkowski
1929 · Good
€55
William Whewell
1848 · Fine
€145
Flint, Austin
1872 · Very good
€70
Albert Verwey
1916 · Very good · NL
€55
Albert Einstein
1935 · Very good
€85
Alfred A. Robb
1935 · Very good
€55
Alfred Daniell
1888 · Good
€70
James Martineau
1935 · Very good
€80
Immanuel Kant
1802 · Fair
€55
Cassius Jackson Keyser
1935 · Good
€50
Florian Cajori
1929 · Good
€65
Immanuel Kant
1823 · Fair
€55
Plato
1889 · Good
€60
John Dalton
1838 · Good
€85
Michael Faraday
1874 · Fine
€65
Jacob Haafner
1851 · Very good · NL
€85
Grant Allen, Franklin T Richards
1897 · Good
€65
E. T. Whittaker, G. N. Watson
1920 · Fine
€75
John MacNeil
1898 · Fair
€80
Edwin Checkley
1890 · Good
€50
Ebenezer Cunningham
1921 · Very good
€70
Bertrand Russell
1935 · Good
€85
René Descartes
1912 · Very good
€85
Clive Cussler, Graham Brown
1901 · Good
€60
Kanny Lall Dey
1872 · Very good
€85
Edwin Hatch
1891 · Good
€50
Bertrand Russell
1916 · Good
€80
Albert Einstein
1935 · Very good
€75
Alexander Findlay
1919 · Good
€75
Albert Einstein
1932 · Very good
€110
Paul Carus
1893 · Good
€95
Plotinus
1916 · Good
€75
Schwegler, Albert
1864 · Fine
€120
Watson, William
1929 · Fair
€50
A. Privat-Deschanel
1889 · Good
€55
A. Privat-Deschanel
1875 · Very good
€80
Plato
1864 · Good
€100
Πλάτων
1848 · Good
€75
Upton Sinclair
1927 · Very good
€75
Balfour Stewart
1875 · Very good
€120
Alfred Russel Wallace
1908 · Very good
€85
Plato
1835 · Fine
€145
William Anthony Granville
1905 · Very good
€50
Søren Kierkegaard
1884 · Good
€50
Abraham Tucker
1817 · Good
€135
D. R. Hay
1874 · Very good
€70
Multatuli
1878 · Good · NL
€115
Dugald Stewart
1815 · Very good
€95
Louis Couperus
1895 · Fine · NL
€65
George Campbell
1823 · Very good
€150
Plato
1879 · Good
€65
Jeremiah Day
1814 · Good
€140
Josiah Royce
1898 · Very good
€75
Henry Erni
1935 · Fair
€55
Garrett Putman Serviss
1911 · Fair
€50
John Cowper Powys
1933 · Very good
€50
Percy Bysshe Shelley
1824 · Very good
€145
Alonzo Gray
1846 · Good
€135
Stella Benson
1925 · Fine
€150