Help Identify Bisque German Doll

Hello
I am looking to identify this bisque German doll maker.
And learn a little more about it.
On the back has marks -

GERMANY - 8750 - B.

Thank you in advance

 

This may be a Gebruder Heubach, or at least that would give you somewhere to start. Search terms that might be helpful are "all bisque bonnet doll" or "all bisque frozen charlotte" I have a book all about these little all bisque dolls somewhere but. no idea where. They were as ubiquitous as Barbie in their day and many many many different varieties were made.

 

Conte and Boehm is another factory that made similar wares.

 

Thank you both