First Printing of the General Form E=mc^2 Equation

Einstein, Albert.  3 appearances in a single bound volume of the Annalen der Physik (1907), including:

1907 ANNALEN DER PHYSIK 23(6):197-198   Ueber die Moeglichkeit einer neuen Pruefung des Relativitatsprinzips.  (Possibility of a new examination of the relativity principle.)

1907 ANNALEN DER PHYSIK 23(6):206-208   Bemerkungen zu der Notiz von Hrn. Paul Ehrenfest: "Die translation deformierbarer Elektronen und der Flaechensatz".  (Comments on the note by Mr Paul Ehrenfest's "Translation of deformed electrons and the surface theorem.)

1907 ANNALEN DER PHYSIK 23(7):371-384  Ueber die vom Relativitsprinzip geforderte Traegheit Energie. (On the inertia of energy required by the relativity principle.)  This is the first appearance of e=mc² in a general form. 

All in Annalen der Physik 23, VIII,1000 pp. and 4 plates.

Einstein's papers pp. 197-98, 206-209 and 371-384.

Weil Nos 17,18 a. 19

Reound in a tidy black modern cloth, very sharp, nicely-done work.  One ex-libris from the Mathematical Library at the University of Berlin--Einstein would be a non-lecturing professor there beginning December 1913. 

$2000