The Gundka is a German index typewriter that began production in 1924 and produced 80.000 units. Characters are selected through a template. Of the three keys that we find on the left, the black one is used to print the chosen letter, the yellow one the numbers and symbols and the red one is the spacer. The Gundka was marketed in other countries under different names (Frolio, Scripta, Perlita, Write-Easy).