Dear Wil,
Your doll is made in China in second half 20th century. Its not an antique but made around 1960 / 1980 I think.
I do not see ivory structure but the craquelé I see in the white material it looks like Marine ivory or just plastic. You can test it to put a hot needle in the white material ( on a non visible place ) and smell. If you smell the oduer of burned hair it is organic. If you smell chemicals it is plastic. I believe it might be marine ivory ( made of walrus tooth or other marine animal ) and indeed dark wood ( most likely Zitan ). Carving is not so nicely done and that is important for making a good price. In this case I would feel your statue will make around the estimate in an auction of sale.