The Winterling Mark
The stamps that identify porcelain pieces as Winterling are very similar, especially after 1950. If you collect Winterling bowls, be aware of the marks identifying the bowl as a Winterling piece so you know which of the two companies manufactured it.
Various Stamps
Both companies have had various stamps, or logos, through the years. Sometimes these stamps are very similar. PM&M (Porcelain Marks and More) has made available on its website the different logos used by both companies.
Varying Values
Antique and collectibles websites, such as Tias.com, have a variety of bowls for anywhere from $10 to $110. For example, a Winterling covered casserole bowl, which has a fern pattern and was manufactured in 1918, is listed for $110. It bears the Winterling stamp in green.
Winterling Today
In May 2009 Heinrich Winterling announced that it would be closing its factory by summer 2010. It closed down sooner than expected, in January 2010. Gebrüder Winterling changed ownership a few times and filed for bankruptcy twice. It became the Neue Porzellanfabrik Triptis G.m.b.H. in June 2005 and remains in business.