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From: Roy.
Remote Name: 86.133.214.76
Date: 04/25/2012
Time: 03:14:38 AM
This is a continuation of a thread date 3/2/12. The short answer to the question is that it was never popular and can't be associated with a particular time period. I have examined literally thousands of steins and their capacity marks and can estimate that less than 1% have used the form 6/20 L. as opposed to the more mathematically preferred equivalent 3/10 L. or 0,3 L. (0.3 in English). The time span covers the same period as all of the mathematical equivalents. These unconventional capacity marks can be found from ca. 1900 to after WWII and probably even now if the manufacturer didn't learn how to reduce fractions in grammar school. An example has come up recently on eBay 300697074602, that has an 8/10 L. capacity mark and is dated "1929"