Few minor changes were made in the Ausf. C version, which became the standard production model from June 1938 through April 1940. A total of 1,113 examples of Ausf. c, A, B, and C tanks were built from March 1937 through April 1940 by Alkett, FAMO, Daimler-Benz, Henschel, MAN, MIAG, and Wegmann. These models were almost identical and were used in service interchangeably. This was the most widespread tank version of the Panzer II and performed the majority of the tank's service the panzer units during the war.
Armed with a 20mm FlaK and a MG34, it is almost identical in role and in armament to the T-60.
More info + images: http://commandos.strategyplanet.gamespy.com/panzer_II.html
More Images: http://www.wwiivehicles.com/germany/tanks_light/pzkpfw_ii.html