I invite you to visit a new website dedicated to the wider passion of collecting various items www.kochamantyki.pl !!! Especially that www.porcelana-tulowice.pl has also its own tiny part in their editing :)
All necessary information for everyone (without exception) including: dates of old stock exchanges, auctions, a list of interesting websites, collectors meetings and many more events can be found on page www.kolekcjonerstwo.pl.
Examples of the original marks and reproduction, along with the factory history and a lot of porcelain photos can be found on Lee and Carol Marple website. I highly recommend visiting !!!
A very interesting set of marks has a website: Porcelain Marks & More!. Take a few minutes trip to read its contents. It's worth !!
Collectors affiliated with the International Association of R.S. Prussia Collectors, Inc. (International Association of R.S. Prussia Collectors, Inc.) on website gives us plenty of examples of typical reproduction along with their marking.
Basic information about the Schlegelmilch family and their factories, also about marking of their products can be found on pages Antique China, Porcelain & Collectibles and my antique mall.