1970-1980 AD., Germany, DDR, refund token for returned empties, Token, Menzel 31297.

Germany, DDR, refund token for returned empties, ca. 1970-1980 AD.,
Token (ø 26-28 mm / 1,44 g), aluminium, octagonal shape (8-sided), plain edge,
Obv.: iς / -.15 , DDR-Konsum -logo (hammer and sickle) in a circle above value, raised rim.
Rev.: (blank) , raised rim.
Menzel 31297 .

thanks to "ischbiera" for the ID support

from a series of 9 different values (-,10 / -.15 / -.20 / -.30 / -,60 / 1,- / 1,50 / 2,- and 3,- Mark), more on http://www.numismatikforum.de/viewtopic.php?f=63&t=48103 (German)