Jan 06, · Here are the results located for you based on Vintage Sevelen Rheintal Suisse Demitasse Octogan Plate, which were the words that you entered.. If you get too few items then please broaden your search terms a little. If you see too many listings then please . Oct 09, · I am trying to find out about a porcelain manufacturer called Rheintal. I have some pieces by this manufacturer, and I know that they were based in the Swiss town of Sevelen, which is in the eastern part of Switzerland. Sevelen Rheintal - Largest selection of patterns at Replacements, Ltd. - Page 1.