1968 AD., Germany, Federal Republic, 500th anniversary of the death of Johannes Gutenberg commemorative, Karlsruhe mint, 5 Deutsche Mark, KM 122.

Germany, Federal Republic, 500th anniversary of the death of Johannes Gutenberg commemorative, engraver: Doris Waschk-Balz, Karlsruhe mint ("G"), dated 1968 AD., issued 17.10.1968,
5 Deutsche Mark (29 mm / 11,09 g), 0,625 silver, 11,20 g theor. mint weight, mintage 3.030.000 , axes about medal alignment ↑↑ (as pictured ca. 20°), plain, immerged lettered edge,
Obv.: BUNDESREPUBLIK DEUTSCHLAND / 10 - 68 / DEUTSCHE - 5 / G - MARK , issuer, value, date and mint mark around eagle.
Rev.: JOHANNES GUTENBERG · / + 1468 , a male, bearded bust facing half right (real portraits of him ane not known).
Edge: plain with immerged inscription "GESEGNET SEI ·- WER DIE SCHRIFT ERFAND · ".
KM 122 ; J. 397 .

Year / Mint Mark / Mintage / Details
1968 G 2,930,000
1968 G 100.000 proof

German coins of the Federal Republic are produced at five different mints, coins from each of them can be identified by their mintmarks, A = Berlin, D = Munich, F = Stuttgart, G = Karlsruhe, J = Hamburg.

Johannes Gensfleisch zur Laden zum Gutenberg (c. 1398 – February 3, 1468) was a German blacksmith, goldsmith, printer, and publisher who introduced printing to Europe. His invention of mechanical movable type printing started the Printing Revolution and is widely regarded as the most important event of the modern period. It played a key role in the development of the Renaissance, Reformation, the Age of Enlightenment, and the Scientific revolution and laid the material basis for the modern knowledge-based economy and the spread of learning to the masses.
More on http://en.wikipedia.org/wiki/Johannes_Gutenberg