Köppelsdorf is a part of Sonneberg, in the Landkreis Sonneberg, in Thuringia 150 km (93 mi) due north of Nuremberg. For fifty years the wooded countryside formed the border between the two Germanys, Sonneberg lying in the GDR. Sonneberg was the centre of the German toy-making industry; it is the home of the German Toy Museum, many doll manufacturers and PIKO model railways.
Gebrüder Heubach of Licht and Sonneberg was a separate firm.
The Ernst Heubach porcelain works opened in 1858 with 50 employees. It traded as Ernst Heubach, Köppelsdorf until 1893, when it became Ernst Heubach, Köppelsdorfer Porzellanfabrik.
Later the firm would manufacture porcelaine for the electrical industry.
In 1915, the founders sons, Ernst and Hans joined the firm, then Hans was killed in the Great War. Beatrice Marseille married Ernst Heubach II. There was thus a family connection between the two firms. Often brothers would do similar jobs in the two firms. A Heubach sculptor had a brother who did the same job at Armand Marseille.
The company manufactured bisque heads from moulds for their own dolls and for other doll-makers: Cuno & Otto Dressel (Jutta), Johannes Gottilf Dietich (Igodi), Gebrüder Ohlhaver (Revalo), Seyfarth & Reinhardt (dolls with the SUR mark) and Adolf Wislizenus.
The dolls are stamped with a variety of marks that sometimes contain a horseshoe.
Most of their dolls had closed mouths; dolls tend to be smaller than the dolls of the other manufacturers- the vast majority are under 50 cm tall. 
Erst Heubach made a large variety of baby and toddler dolls with mould numbers including, 300, 320, 342 and 399. They produced ethnic character dolls, the Pirat Baby range had mould numbers of 418, 316, 444, 452, 463.
These dolls are collectables and can be found in many private collections and museums.
- Foulke 2001, p. 100.
- "Ernst Heubach" (in German). 8 February 2015. Retrieved 27 September 2018.
- "Ernst Heubach Dolls 1887-1932+ German". Doll Reference. 2014. Retrieved 22 October 2014. There are some spelling errors in this reference: The German und has been accidentally translated into and. The dot after vorm is missing; it is an abbreviation for the German vormals, i.e. formerly. Also the umlaut dots where dropped.
- "Ernst Heubach Dolls 1887-1932+ German". Doll Reference. 2014. Retrieved 22 October 2014.
- Foulke 2001, p. 101.
- Van Patten 2014.
- Foulke, Jan (2001). 15th Blue Book Dolls & Values. Grantsville, MD: Hobby House Press. ISBN 0-87588-614-0.
- Van Patten, Denise (2014). "Top Five German Antique Doll Brands". Retrieved 22 October 2014.
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