Nice work! Good finds!
strange finds.What was this doll for?
At first glance, the doll looked as though it was a wine bottle stopper. After second glance, I believe the bottom of the piece was the attachment for a moving mechanism for the doll's bottom half.
BOEHRINGER INGELHEIM is a pharmaceutical company so the bottle you have would have contained medication of some description.
I don't know if they 'existed' in the 1940's so you need to do some research first to be sure.
Hope this helps
Steve T (Pharmacist )